Darren Suffers from Fragile Bone X (FBX)disorder

Multiple Choice

Darren suffers from fragile bone X (FBX) disorder.He inherited the FBX allele from his father and the normal allele for bone development from his mother.What can we conclude?

A) FBX is a recessive allele.
B) FBX is a dominant allele.
C) Darren's children will most likely suffer from FBX disorder.
D) Darren's children are unlikely to suffer from FBX disorder.