问题如下：
Which of these outcomes is not associated with an operational risk process?
选项：
A.The sale of call options is booked as a purchase.
B.A monthly volatility is inputted in a model that requires a daily volatility.
C.A loss is incurred on an option portfolio because ex post volatility exceeded expected volatility.
D.A volatility estimate is based on a time series that includes a price that exceeds the other prices by a factor of 100.
解释：
C is correct. Choices a., b., and d. are operational losses. Answer c. is the result of a bet on volatility, which is market risk.
请问A选项怎么理解
