问题
单项选择题
An investor sold a stock short and is worried about rising prices. To protect himself from rising prices he would place a:（）
A. stop order to sell.
B. limit order to sell.
C. stop order to buy.
答案
参考答案：C
解析：
A limit order to sell is placed above the current market price. A stop (loss) order to buy is placed above the current market price. A stop (loss) order to sell is placed below the current market price. A stop order becomes a market order if the price is hit.