Question

I don't usually ask questions but I'm very confused on this question. I would love it if you would be able to help me!

Which of these statements is true about continuous random variables and their probability distributions?
1. the distribution is modeled by a probability distribution function that in non-negative.
2. the probability of an individual event E is calculated by P(X = E)
3. The total area under the curve is 1

(A) 1 only
(B) 1 and 2 only
(CC) 1 and 3 only
(D) 2 only
(E) 3 only