Suppose That the Total Cost (In Dollars) for a Product

Suppose that the total cost (in dollars) for a product is given by , where x is the number of units produced. Find the marginal cost when 500 units are produced, and interpret your result. Round your answer to the nearest cent. ​

A) $0.80. It will cost approximately $0.80 to make the 501st unit.
B) $0.31. It will cost approximately $0.31 to make the 501st unit.
C) $0.40. It will cost approximately $0.40 to make the 501st unit.
D) $380.95. It will cost approximately $380.95 to make the 501st unit.
E) $1.00. It will cost approximately $1.00 to make the 501st unit.