The following pedigree chart shows the inheritance of a genetic disorder. I-2 and III-2 are the only affected individuals.

Which one of the following is the correct pattern of inheritance of the disorder, and the genotype of the II-3 individual?

• A

  Autosomal dominant, homozygous for the normal allele
• Correct answer
  B

  Autosomal recessive, heterozygous
• C

  Autosomal recessive, homozygous for the normal allele
• D

  X-linked recessive, heterozygous

Hence, the correct answer is option: 'B'.