Sandra Is a Female Body Builder

Sandra is a female body builder.To build extra muscle,Sandra begins illegally taking testosterone injections.Based on studies investigating the relationship between cognitive ability and testosterone levels in women,which of the following is most likely to be a side effect of her treatment?

A) Her performance on a verbal fluency test would improve.
B) Her performance on a mental rotation test would improve.
C) Her performance on both mental rotation and verbal fluency tests would improve.
D) Her performance on both mental rotation and verbal fluency tests would decrease.