Atranssexual who is attracted to females would be classified as

Gynephilia.

Gynephilia is a term used in behavioral science to describe sexual orientation, as an attraction to women. When it's sexual attraction to men is called androphilia and when its attraction to both is called ambiphilia.
This term describes the attraction not gender identity. That means the fact that the person is transgender, doesn't matter in this terms.

C) to ensure each new cell has an exact copy of the dna