Where Is a Perfectly Competitive Firm's Break-Even Output Level

Multiple Choice

Where is a perfectly competitive firm's break-even output level?

A) at the intersection of the marginal cost curve with the marginal revenue curve
B) at the intersection of the total cost curve with the marginal revenue curve
C) at the minimum point of the average total cost curve
D) at the minimum point of the marginal cost curve
E) at the minimum point of the average variable cost curve