Is a multiple birth involving a mother who was at least 40 years old unusual? A. No, because the probability of a multiple birth involving a mother who was at least 40 years old is greater than 0.05. B. Yes, because the probability of a multiple birth involving a mother who was at least 40 years old is less than 0.05. C. Yes, because the probability of a multiple birth involving a mother who was at least 40 years old is greater than 0.05. D. No, because the probability of a multiple birth involving a mother who was at least 40 years old is less than 0.05