In the Short Run,the Perfectly Competitive Market Supply Curve

In the short run,the perfectly competitive market supply curve

A) is indeterminate
B) shows the total quantities of resources used by all firms in that market,given the market price of resources
C) is the same as the individual supply curve of the dominant firm
D) shows the sum of the quantities of output supplied by all firms in the market at each price
E) is irrelevant to potential entrants