Why Can't Measures of Arousal Be Used to Determine Whether

Why can't measures of arousal be used to determine whether a women is sexually interested in children?

A) Because what women report is attractive to them and their arousal patterns don't match
B) Because equipment used to measure arousal is stimulating and can confound results
C) Because women are better than men at intentionally suppressing feelings of sexual arousal
D) Because most women who commit sexual offences do so because they have difficulty becoming aroused except under very unusual circumstances