Suppose in the automobile industry with free entry and exit, the marginal cost is constant at $5,000, Ford and Chrysler, two identical manufacturers, are currently producing 1,000 cars each and earning zero economic profit. If the equilibrium price is $20,000, then what is the fixed cost for each manufacturer?

A) $20,000,000

B) $15,000,000

C) $5,000,000

D) $10,000,000