An individual may have 0, 1, or 2 alleles that affect susceptibility to a disease D. The probability that an individual has 0 susceptibility alleles is , ; the probability of 1 susceptibility allele is ; and the probability of 2 susceptibility alleles is . The probability that an individual with 0 susceptibility alleles has the disease D is ; the probability that an individual with 1 susceptibility allele has the disease D is ; and the probability that an individual with 2 susceptibility allele has the disease D is , where . Find the probability that an individual with the disease has 0 susceptibility alleles; that is, find the probability of 0 susceptibility alleles given that the individual has the disease. This problem is worth 40 points.