Assuming that all other factors remain unchanged, determine how a firm's break-even-point is affected by each of the following:

(a) The firm finds it necessary to reduce the price unit because of foreign competition.

(b) The firm's director's labour costs are increased as the result of a new labour contract.

(c) The Occupational Safety and Health Administration requires the firm to install new ventilating in its plant. (Assume that this action has no effect on worker productivity)