At Concordia University, 70% of new students entering the Teaching English as a Second Language (TESL) degree are female. Of those female students, 85% of them will graduate, whereas 90% of males will successfully complete the same programme. If a new TESL student is chosen at random, what is the probability that:
a) They graduate and they are female?
b) They are male and do not graduate?
c) They graduate?
d) They are female, given that they do not graduate?