单选题 An investor opens a margin account with an initial deposit of $ 5000. He then purchases 200 shares of PRK stock at $46 in his margin account, which has a margin maintenance requirement of 25 percent. Ignoring commissions and interest, the minimum price that PRK stock can fall to before the investor receives a margin call is closest to:

A、

A. $20.00.
B、

B. $28.00.
C、

C. $33.33.

【正确答案】 B

【答案解析】Determine the price (P) that is equal to 25 percent: (200P-4200)/200P=0.25, P=$ 28.00.