Which One of the Following Probabilities Is a Cumulative Probability

Multiple Choice

Which one of the following probabilities is a cumulative probability?

A) The probability that there are exactly 4 people with Type O+ blood in a sample of 10 people.
B) The probability of exactly 3 heads in 6 flips of a coin.
C) The probability that the accumulated annual rainfall in a certain city next year, rounded to the nearest inch, will be 18 inches.
D) The probability that a randomly selected woman's height is 67 inches or less.