You short sell $500$ shares of Yahoo stock at a price of $$23$ per share, using the full initial margin of $55\%.$ After a surprisingly positive earnings announcement, the stock price rises to $$31$ per share. Your broker immediately gives you a margin call and requests that you add additional cash to your position to get back to the required maintenance margin level of $35\%.$ How much cash do you need to add to your account?

$$3100$

$$4237$

$$2500$

$$3879$

Position still above