Tina randomly selects two distinct numbers from the set {1,2,3,4,5}, and Sergio randomly selects a number from the set {1,2,…,10}. What is the probability that Sergio’s number is larger than the sum of the two numbers chosen by Tina ?
(A) 2/5 (B) 9/20 (C) 1/2 (D) 11/20 (E) 24/25
ANSWER: A