The junior class has 50 students. Twenty-five students take only French, 15 take only Latin, and 10 take both. If a student is chosen at random from the class, what is the probability that the student chosen takes neither French nor Latin?

(It says NEITHER)
a. 0
b. 2/5
c. 3/5

I personally think it would be a. 0 but everywhere I look says 2/5