$13.$ You have a trading account with $10,000$ shares of a stock that last traded yesterday at $$9\mathrm{.}20.$ To open this position you took a broker loan of $$30,000$ last year at a rate of $7\%.$ Knowing that the maintenance margin is $25\%$ and given you expect the stock to fall by $3\%$ today, what is the most you may withdraw from this account without expecting to trigger a margin call?

A$)$ $$10,700$

B$)$ $$22,310$

C$)$ $$32,100$

D$)$ $$42,800$

E$)$ $$46,440$