1. Suppose you buy 200 shares of stock ABC at $50 per share and sell it in a year. The initial margin is 40%. The call money rate is 7%. One year later, stock price decreases 20% to $40. What's the rate of return of buying on margin?

   	A.	-57.5%
   	B.	-60.5%
   	C.	-62.5%
   	D.	-70%