For a Given Market Price,a Perfectly Competitive Firm's Average-Revenue Curve

For a given market price,a perfectly competitive firm's average-revenue curve

A) is a positively sloped straight line,starting from the origin.
B) increases to the right and then declines when MC = MR.
C) is a straight line that coincides with the market demand curve.
D) is the same as the firm's demand curve.
E) is the same as the firm's TR curve.