NO.PZ2020033001000084
问题如下：
Out-of-the-money currency options show ___ implied volatility than/as at-the-money currency options.
选项：
A. the same
B. similar
C. lower
D. higher
解释：
D is correct.
考点：Volatility smile
解析：
Out-of-the-money currency options have greater implied volatility than at-the-money options. This pattern results in a volatility smile.
这里没有指明是call还是put，怎么判断呢
