The makers of the candy M& Ms report that their plain M& Ms are composed of 15% yellow, 10% red, 20% orange, 25% blue, 15% green, and 15% brown. If you randomly select an M& M, what is the probability of the following?
a. It is brown.
b. It is red or green.
c. It is not blue.
d. It is both red and brown.