The employees of a company were surveyed on questions regarding their educational background and marital status. Of the 900 employees, 590 had college degrees, 120 were single, and 80 were single college graduates. Find the probability that an employee of the company is married and has a college degree.
a) 0.40
b) 0.57
c) 0.64
d) 0.70
I know that the answer for this question is B, but I want to know why the other choices were incorrect and why B is the correct answer? Explain please?"