Consider the following statements in respect of the vectors aligned...

Consider the following statements in respect of the vectors $$\begin{aligned} & \vec{u}_1=(1,2,3), \vec{u}_2=(2,3,1), \\ & \vec{u}_3=(1,3,2), \text{ and } \vec{u}_4=(4,6,2) \end{aligned}$$ 1. $\vec{u}_1$ is parallel to $\vec{u}_4$ 2. $\vec{u}_2$ is parallel to $\vec{u}_4$ 3. $\vec{u}_2$ is parallel to $\vec{u}_3$ Which of the statements given above is/are correct?