( ) Production output was at a standstill until the new foreman acted as a catalyst to increase productivity.
(A) Product increased in its amount because of the appearance of a new kind.
(B) There was a deduction of production export because a layman held the position.
(C) The production did not increase until a new worker leader pushed forward.
(D) The new foreman, as a former actor, was capable of promoting the production output.