In the multiplication problem below, A, B, C and D are different digits. What is A+B?
\begin{array}{cccc}
& A & B & A \\
\times & C & D & \\
\hline
C & D & C & D \\
\end{array}
Answer Choices
A. 1
B. 2
C. 3
D. 4
E. 9
In the multiplication problem below, A, B, C and D are different digits. What is A+B?
Answer Choices
A. 1
B. 2
C. 3
D. 4
E. 9