Which statement best expresses the theme of "The Laugher"?

“The Laugher” by Heinrich Böll is full of contradictions, so much so that they themselves become the main framework of the story. The narrator’s last statement beautifully encapsulates this absurd theme:

"So I laugh in many different ways, but my own laughter I have never heard."

In the first half of the story, the unnamed narrator describes his work, that of a professional laugher. He tells us of his versatility and range and the breadth of his knowledge of the art of cachinnation. However, he also makes a point of telling us how much he is attached to the truth—he won’t represent himself as an actor to others, because he feels he does not have all the skills of an actor and so cannot truthfully claim that title. Yet, his entire means of earning his keep is a lie (who hires someone to laugh when a subject is truthfully funny?), and so a dichotomy is set up between his avowed love of truth and his means of earning his keep.
The second half of the story only adds another layer to the split between what the narrator professes and his profession. He himself, as he says, is a solemn man, never laughing while off duty, and notes that he was that way since he was a boy. Laughter never occurs in his home, only occasional smiles. In fact, during his work hours he is responsible for the promotion and spread of laughter; at home, he suppresses it, and he has suppressed it so long and so successfully that his wife also laughs no longer.
Further, laughter itself is generally considered—leaving aside instances of laughter intended to be mocking or hurtful—to be an unfeigned and uncalculated response to humor or an unexpected situation. Yet the narrator’s entire vocation is the deliberate opposite. He provides laughter upon demand, in any quality or variety, regardless of (and, in the cases of the poor comedians, in direct contradiction to) natural instinct.
All of these contradictions are wrapped up in the ultimate sentence, which in itself adds the capstone: this man, whose job it is to spread laughter and expression of joy to others, has never himself been so joyful as to discover what his own laughter sounds like. Truly a sad—but apt—end to a funny little story.