If a vector $\vec A$ is parallel to another vector $\vec B$ then the resultant of the vector $\vec A \times \vec B$ will be equal to
If a vector $\vec A$ is parallel to another vector $\vec B$ then the resultant of the vector $\vec A \times \vec B$ will be equal to
$A$
$\vec A$
Zero vector
Zero
If a vector $\vec A$ is parallel to another vector $\vec B$ then the resultant of the vector $\vec A \times \vec B$ will be equal to
$\overrightarrow A \times \overrightarrow B = AB\sin \theta \,\hat n$
for parallel vectors $\theta = 0^\circ $ or $180^\circ $, $\sin \theta = 0$
$\therefore $ $\overrightarrow A \times \overrightarrow B = \hat 0$