Hai vectơ \(\overrightarrow a \) = (m; 2; 3) và \(\overrightarrow b \) = (1; n; 2) cùng phương khi A. \(\left\{ \begin{array}{l}m = \frac{1}{2}\\n = \frac{4}{3}.\end{array} \right.\) B. \(\left\{ \begin{array}{l}m = \frac{3}{2}\\n = \frac{4}{3}.\end{array} \right.\) C. \(\left\{ \begin{array}{l}m = \frac{3}{2}\\n = \frac{2}{3}.\end{array} \right.\) D. \(\left\{ \begin{array}{l}m = \frac{2}{3}\\n = \frac{4}{3}.\end{array} \right.\)

Hai vectơ \(\overrightarrow a \) = (m; 2; 3) và \(\overrightarrow b \) = (1; n; 2) cùng phương khi

A. \(\left\{ \begin{array}{l}m = \frac{1}{2}\\n = \frac{4}{3}.\end{array} \right.\)

B. \(\left\{ \begin{array}{l}m = \frac{3}{2}\\n = \frac{4}{3}.\end{array} \right.\)

C. \(\left\{ \begin{array}{l}m = \frac{3}{2}\\n = \frac{2}{3}.\end{array} \right.\)

D. \(\left\{ \begin{array}{l}m = \frac{2}{3}\\n = \frac{4}{3}.\end{array} \right.\)