You sell short 100 shares of the QQP stock at $70 per share. Assume your broker requires an initial margin of 60% and a maintenance margin of 25%. If the stock price increases above a certain level, P, the percentage margin would drop below the maintenance margin of 25% and you will get a margin call. What is P?

Select one:

a. $87.04

b. $89.6

c. $91.55

d. $84.33