Researchers Have Studied Finger Length Ratios in Heterosexual and Homosexual

Researchers have studied finger length ratios in heterosexual and homosexual women

A) in order to find ways to diagnose homosexuality.
B) because lesbian women use their hands more when expressing themselves.
C) because the growth of the ring finger is an indicator of sexual maturity in women.
D) because finger length is influenced by sexual experiences in early childhood.
E) because finger ratios are sexually dimorphic and thought to be an indicator of prenatal hormone levels.