Achondroplasia Achondroplasia Is an Autosomal Dominant Disorder, However Homozygous Dominant

Achondroplasia Achondroplasia is an autosomal dominant disorder, however homozygous dominant individuals do not have achondroplasia - they either die before birth or very shortly thereafter. The homozygous recessive condition is normal. A dwarf couple decide to have children. Use this information to answer the following question(s) . In the example above, what is the probability that this couple will have a normal child?

A) 0
B) 1/4
C) 1/3
D) 2/3
E) 1/2