Use a Graphing Calculator to Find the Inverse of the Matrix

Multiple Choice

Use a graphing calculator to find the inverse of the matrix. $\left[ \begin{array} { l l l l } 1 & 4 & 8 & 3 \\0 & 1 & 4 & 8 \\0 & 0 & 1 & 4 \\0 & 0 & 0 & 1\end{array} \right]$

A) $\left[ \begin{array} { c c c c } 1 & 4 & 8 & - 3 \\0 & 1 & - 4 & 8 \\0 & 0 & 1 & 4 \\0 & 0 & 0 & 1\end{array} \right]$
B) $\left[ \begin{array} { c c c c } 1 & - 4 & 8 & 3 \\0 & 1 & - 4 & 8 \\0 & 0 & 1 & - 4 \\0 & 0 & 0 & 1\end{array} \right]$
C) $\left[ \begin{array} { c c c c } 1 & - 4 & - 8 & - 3 \\0 & 1 & - 4 & - 8 \\0 & 0 & 1 & - 4 \\0 & 0 & 0 & 1\end{array} \right]$
D) $\left[ \begin{array} { c c c c } 1 & - 4 & 8 & - 3 \\0 & 1 & - 4 & 8 \\0 & 0 & 1 & - 4 \\0 & 0 & 0 & 1\end{array} \right]$
E) $\left[ \begin{array} { c c c c } 1 & 4 & 8 & - 3 \\0 & 1 & 4 & 8 \\0 & 0 & 1 & 4 \\0 & 0 & 0 & 1\end{array} \right]$