2 Which one of the matrices below represents a rotation of \(90 ^ { \circ }\) about the \(x\)-axis? Circle your answer.
[0pt] [1 mark]
\(\left[ \begin{array} { c c c } 1 & 0 & 0
0 & 1 & 0
0 & 0 & - 1 \end{array} \right]\)
\(\left[ \begin{array} { c c c } - 1 & 0 & 0
0 & 1 & 0
0 & 0 & 1 \end{array} \right]\)
\(\left[ \begin{array} { l l l } 1 & 0 & 0
0 & 0 & 1
0 & 1 & 0 \end{array} \right]\)
\(\left[ \begin{array} { c c c } 1 & 0 & 0
0 & 0 & - 1
0 & 1 & 0 \end{array} \right]\)