In What Way Does Transvestism Differ from Transgenderism

In what way does transvestism differ from transgenderism?

A) People who have tranvestism have gender dysphoria.
B) People who are transgender have gender dysphoria.
C) People who have transvestism always have autogynephilia, whereas people who are transgender never have autogynephilia.
D) People who have transvestism do not begin cross-dressing until they are adults, whereas transgender individuals prefer to cross-dress from a very early age.