The Term "Quantity Supplied" Is the Amount of a Commodity

The term "quantity supplied" is the amount of a commodity that

A) firms wish to sell at a given price during a given period of time.
B) firms actually sell during a given period of time at a given price.
C) is supplied at a fair market price.
D) is exchanged between firms and consumers during a given period of time at a given price.
E) households wish firms would sell during a given period of time at a given price.