Cho \(\overrightarrow a \left( {3;1; - 2} \right)\...

Câu hỏi: Cho \(\overrightarrow a \left( {3;1; - 2} \right)\). Hỏi \(4\overrightarrow a  = \)

A \(\left( {12;4; - 8} \right)\)

B \(\left( {9;3; - 6} \right)\)

C \(\left( {5;2;2} \right)\)

D \(\left( {6;4;0} \right)\)