问题
单项选择题
An investor purchases 200 shares of Merxx on margin. The shares are trading at $40. Initial and maintenance margins are 50 percent and 25 percent. If the investor sells the stock when the price rises to $50 at year-end, the return on the investment would be closest to:（）
A. 50.00%.
B. 18.75%.
C. 25.00%.
答案
参考答案：A
解析：
Profit =10000-8000=2000, Return =2000/4000=50%.