Find the 3 × 3 Matrix That Produces the Described $\left[ \begin{array} { r r r r } - 1 & 0 & 0 \\ 0 & 1 & 0 \\ 0 & 0 & 1 \end{array} \right]$

Multiple Choice

Find the 3 × 3 matrix that produces the described transformation, using homogeneous coordinates.
-Reflect through the x-axis

A)
$\left[ \begin{array} { r r r r } - 1 & 0 & 0 \\ 0 & 1 & 0 \\ 0 & 0 & 1 \end{array} \right]$

B)
$\left[ \begin{array} { r r r } 1 & 0 & 0 \\ 0 & - 1 & 0 \\ 0 & 0 & 1 \end{array} \right]$

C)
$\left[ \begin{array} { r r r } - 1 & 0 & 0 \\ 0 & - 1 & 0 \\ 0 & 0 & 1 \end{array} \right]$

D)

$\left[ \begin{array} { l l l } 1 & 0 & 0 \\ 0 & 1 & 0 \\ 0 & 0 & 1 \end{array} \right]$