A family with only one affected parent and a child with a dominant disease would like to know what the probability is that one of their unaffected children might be a carrier. What do you tell them? A. the chance that an unaffected child is a carrier is 2/3 B. the chance that an unaffected child is a carrier is 0% C. the chance that an unaffected child is a carrier is 75% D. the chance that an unaffected child is a carrier is less than 50% E. the chance that an unaffected child is a carrier is 50%.