AMC 10 2014a Problem 17

Three fair six-sided dice are rolled. What is the probability that the values shown on two of the dice sum to the value shown on the remaining die? $\textbf{(A)}\ \dfrac16 \textbf{(B)}\ \dfrac{13}{72} \textbf{(C)}\ \dfrac7{36} \textbf{(D)}\ \dfrac5{24} \textbf{(E)}\ \dfrac29$