Physics - Vectors Question with Solution | TestHub

The vectors are given by $\dot{\mathbf{A}}=\hat{\mathbf{i}}+2\hat{\mathbf{j}}+2\hat{\mathbf{k}}$ and $\mathbf{B}=3\hat{\mathbf{i}}+6\hat{\mathbf{j}}+2\mathbf{k}$. Another vector $\mathbf{C}$ has the same magnitude as $\mathbf{B}$ but has the same direction as A. Then which of the following vectors represents C?