Consider Johnson Mechanical Is the Only Seller in Its Particular

Consider Johnson Mechanical is the only seller in its particular regional market.On the other hand,Amato Mechanical is one of twenty sellers in its particular regional market.All else equal,we would expect

A) Johnson Mechanical to be relatively more productive than Amato Mechanical.
B) Amato Mechanical to be relatively more productive than Johnson Mechanical.
C) no difference in productivity between the two firms.
D) Amato Mechanical might be more productive than Johnson Mechanical, but only if management for Amato Mechanical is a sole proprietorship.