1

Part of 1997 AMC 12/AHSME

Problems(1)

Match the numbers

Source:

a

b

are digits for which
\begin{tabular}{ccc} & 2 & a\\

\times

& b & 3\\ \hline & 6 & 9\\ 9 & 2\\ \hline 9 & 8 & 9\end{tabular}
Then

a+b =

A. 3 B. 4 C. 7 D. 9 E. 12