(Choose 1 answer)
A class in advanced physics is comprised of 10 juniors, 30 seniors, and 10 graduate student show that 3 of the juniors, 10 of the seniors, and 5 of the graduate students received an A for student is chosen at random from this class and is found to have earned an A, what is the pr she is a senior?
A. 2/9
B. 4/9
C. 5/9
D. 7/9
E. None of the other choices is correct
Exit 7
