1. Suppose that a buying on margin account has a 50% initial margin and 40% maintenance margin, If the stock price is $100, a 60,000 deposit buys 600 shares, where borrowed amount is 30,000 and Equity Capital is 30,000. How far can the stock price fall before there is a margin call:

A. 83.33

B. 166.67

C.116.67

D. 33.33

Please help me out with this question. I need to know how to solve out.