If Z Represents the Sum of Two Discrete Random Variables

Multiple Choice

If Z represents the sum of two discrete random variables X and Y,

A) Z may be a discrete or a continuous random variable.
B) the probability distribution of Z is obtained by adding the distributions of X and Y.
C) Z may not satisfy the general requirements for a discrete probability distribution
D) Z will also be a discrete random variable.
E) Z will be a continuous random variable.