The director of health services is concerned about a possible flu outbreak at her college.She surveyed 100 randomly selected residents from the college's dormitories to see whether they had received a preventive flu shot.The results are shown below.What is the probability that a dormitory resident chosen at random from this group has had a flu shot, given that he is male?

A: 39/80

B: 13/17

C: 39/100

D: 51/100