A teacher has 9 red crayons, 4 blue crayons, 7 purple crayons, and 5 black crayons in a basket. A student reaches into the basket and randomly selects a crayon. What is the probability that the crayon will be either blue or black?
- A.
4/16 - B.
13/25 - C.
9/25 - D.
9/16
- A.