Jill Bears the Genetic Code for Von Willebrand Disease, but She

Jill bears the genetic code for Von Willebrand disease, but she has never developed the illness herself. Jill would be considered ______.

A) a carrier of the recessive gene that causes the disease.
B) susceptible to the disease after adolescence.
C) an acceptor of the recessive gene that causes the disease.
D) susceptible to the disease at late adulthood.