In a class, 60% are boys and 40% are girls. The probability of a girl getting a first class is 0.30, and the probability of a boy getting a first class is 0.25. If a student is randomly chosen from the class, what is the probability that the chosen student will get a first class?
(a) 0.27
(b) 0.28
(c) 0.29
(d) 0.30