Suppose that an investor enters into a futures contract to buy silver for $16.80 per ounce. The size of the contract is 5,000 ounces. The initial margin is $3,000, and the maintenance margin is $1,000. Regarding a futures price that the investor will receive a margin call and the additional amount of money that the investor needs to deposit, which of the following statements is the most accurate?

Select one:

a. A futures price of $16.40; the additional amount of $2,000

b. A futures price of $17.20; the additional amount of $3,000

c. A futures price of $17.20; the additional amount of $2,000

d. A futures price of $16.40; the additional amount of $3,000