(Choose 1 answer)
(See picture)
Find the (2,3)-entry of [imath]A^{-1}[/imath] if
[math]
A=\left[\begin{array}{ccc}
1 & 2 & -1 \\
3 & 1 & 1 \\
0 & 4 & 7
\end{array}\right]
[/math]
A. 3/41
B. 4/71
C. None of the other choices is correct
D. 4/51
E. 2/31