A Couple Comes to You for Genetic Counseling and the Male

A couple comes to you for genetic counseling and the male partner has a rare mitochondrial disease. What do you tell them about the chance that their first child would have the disease?

A) the first child can be screened using in vitro fertilization, so no testing is necessary
B) the first child will only have the disease is they are male
C) the first child will have no chance of inheriting the disease
D) the child will have the disease because mitochondria are inherited paternally
E) the first child will only have the disease is they are female