Affected individuals from the kindred illustrated in the ped…

Affected individuals from the kindred illustrated in the pedigree have a fully penetrant myopathic phenotype, sensorineural hearing loss, and epilepsy.  Histological analysis of a muscle biopsy from II-3 is illustrated in the figure.  If individual III-2 has a daughter, which of the following options is the best estimate that she will be affected? A 0% B 25% C 50% D 66% E 75% F 100%