7. In a population, among 1000 women who have had a negative mammogram, 20 will develop breast cancer during the next 2 years. Whereas one in 10 women who have had a positive mammogram will develop breast cancer in the next 2 years. It is assumed that in this population 10% of women have had a positive mammogram. What is the probability that a woman in this population will develop breast cancer within the next 2 years? A) 0.201 B) 0.192 C) 0.028 D) 0.321