According to a National Survey of Sexual Behaviour in the United

Multiple Choice

According to a national survey of sexual behaviour in the United States, 38.6% of women aged 30-39 reported masturbating in the previous month. The percentage of women aged 40-49 reporting masturbating in the previous month was

A) about 10 percentage points lower.
B) about the same.
C) about 10 percentage points higher.
D) about 15 percentage points higher.