If a current carrying coil having a magnetic moment $ \overrightarrow M$ is placed in a magnetic field $ \overrightarrow B$ , then the torque acting on it will be

Question

$\begin {array} {1 1} (a)\;\overrightarrow M \times \overrightarrow B & \quad (b)\;\overrightarrow M ^. \overrightarrow B \\ (c)\;\overrightarrow M / \overrightarrow B & \quad (d)\;\overrightarrow B / \overrightarrow M \end {array}$