单选题 Randy Smith called his broker, Pare Durbin, and asked her to borrow 100 shares of Zylex Corp. stock. Randy then sold the stock at the current market price of $45 while anticipating that Durbin would be able to buy the stock back for him at a lower price in the future. What type of order did Smith place?

A. Short sale.
B. Market order.
C. Margin order.

【正确答案】 A

【答案解析】The objective of a short sale is to sell borrowed securities at the current market price and then replace them with the same securities purchased at a lower price.