The Probability That Someone in the Human Population Has Blood

The probability that someone in the human population has blood type AB is about p = .08; the probability that someone has blood type O is about p = .25.Knowing that each individual can have one and only one blood type,what is the probability that a person has an AB or O blood type?

A) .33
B) .02
C) 1.00
D) This state of affairs is not possible.