We suppose that the current futures price is $$4\mathrm{.}5725$ per bushel, delivered in Dec. Contract size $=100$ bushels. Investor has contracted to buy a total of $300$ bushels. Initial margin: $$50$ per contract.

If by the end of the first day the futures price has dropped from $$4\mathrm{.}5725$ to $$4\mathrm{.}56$ per bushel. What is the balance in the margin account by the end of the first day?

$$146\mathrm{.}25$

$$130\mathrm{.}52$

$$135\mathrm{.}67$

$$140\mathrm{.}15$