56. Albinism is a congenital disease due to the loss of melanin in animals. One man got married to a woman, but they did not conceive that both of them are carriers of albinism. If they give birth to two children, what is the probability of both offspring being aflicted with this disease? (A) 1/2 (B) 1/4 (C) 1/8 (D) 1/16 (E) 1/64