If the vector \({\rm{\vec k}}\) and \({\rm{\vec A}}\) are parallel to each other, then what is \({\rm{\vec k}} \times {\rm{\vec A}}\) equal to?
1
\({{\rm{k}}^2}\overrightarrow {{\rm{A}}} \)
2
\(\vec 0\)
3
\(-{{\rm{k}}^2}\overrightarrow {{\rm{A}}} \)
4
\({\rm{\vec A}}\)