Assume You Sold Short 100 Shares of Common Stock at $70

Assume you sold short 100 shares of common stock at $70 per share.The initial margin is 50%.What would be the maintenance margin if a margin call is made at a stock price of $85?

A) 40.5%
B) 20.5%
C) 35.5%
D) 23.5%
E) none of the above