Task: Question Answering
Input (English): \begin{gather*} A + A = CB \\ C + B = 5 \end{gather*} Each correctly worked addition problem above shows the sum of two one-digit numbers. If the digits A, B, and C are nonzero, then \(A =\)
(A)2 (B)4 (C)5 (D)7 (E)9
Output (English): D