You have just bought 10 futures contracts on pork bellies. Each futures contract calls for the delivery of 5,000 pork bellies. The current futures price is $2/belly. The initial margin on your pork belly futures position is 20% of the contract value. The maintenance margin is 15% of the value of the position at the time of initiation. Over the next 4 days, the futures price of pork bellies evolves as follows.

Date Pork belly futures price today (t=0) $ 2.00

1 $ 2.20

2 $ 1.80

3 $ 1.40

4 $ 1.70

Assuming daily mark-to-market and not withdrawing any funds from the margin account, what is the balance in your margin account at the end of day 4?

A. $20,000

B. $35,000

C. $15,000

D. $17,000

E. None of the other answers are correct.