问题
单项选择题
单独使用采购模块，录入采购入库单时具有什么样属性的存货可以被参照录入？（）
A.购买
B.购入
C.外购
D.委外
答案
参考答案：C
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单独使用采购模块，录入采购入库单时具有什么样属性的存货可以被参照录入？（）
A.购买
B.购入
C.外购
D.委外
参考答案：C
An investor buys a call option with a $25 exercise price priced at $4 and writes a call option with a $40 exercise price priced at $2.50. If the Price of the stock increases to $50 at expiration and the options are exercised on the expiration date, the net profit at expiration (ignoring transaction costs) is:
A．
| A. $8.50. |
B．
| B. $13.50. |
C．
| C. $16.50. |