You take a long position in the Gold futures on $\frac{1}{15}$ when the futures price is $\frac{1600}{o}z.$ Each contract

is for a $100oz.$ The initial margin is $$10,000$ and the maintenance margin is $$6,000.$ Following your trade,

the market moves in the following manner.

a$.$ On what day$($s$)$ do you get a margin call and what are the amounts of the margin calls?

Answer: