A Man Diagnosed with Major Depressive Disorder Exhibited His First

A man diagnosed with major depressive disorder exhibited his first diagnosable symptoms when he was about 40 years old. Among those experiencing major depressive disorder, his case is:

A) common: most people with this diagnosis are men in their early to mid-40s.
B) uncommon: most people with this diagnosis are women in their early to mid-40s.
C) uncommon: most people with this diagnosis are men in their mid- to late 20s
D) very uncommon: most people with this diagnosis are women in their mid- to late 20s