Which one of the following selections, if true, would most seriously weaken ... ...

Which one of the following selections, if true, would most seriously weaken the author’s conclusion that robots will not replace skilled craftsmen in the production of musical instruments?
(A) Not as many musical instruments are being produced today, so the industry cannot afford to pay skilled craftsmen.
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Exercise (Logic I)