Below Is a Pedigree for a Very Rare,late-Onset Genetic Condition

Below is a pedigree for a very rare,late-onset genetic condition.Below the pedigree are represented the RFLP banding patterns obtained for each individual in the family.The RFLP locus used is about 2 cM away from the gene responsible for the disease.Note that darker/thicker bands indicate homozygosity for that particular morph of the RFLP.
What is the probability that the child in generation III will develop the disease?

A) 0%
B) 0.4%
C) 1%
D) 2%
E) 50%