Let the vectors $ \overrightarrow a$ and $ \overrightarrow b$ be such that $| \overrightarrow a | = 3$ and $ |\overrightarrow b | = \frac{\large \sqrt 2}{\large 3}$ , then $\overrightarrow a \times \overrightarrow b$ is a unit vector, if the angle between $ \overrightarrow a$ and $ \overrightarrow b$ is

Question

\[ \begin{array} (A) \frac{\pi}{6} \quad & (B) \frac{\pi}{4} \quad & (C) \frac{\pi}{3} \quad &(D) \frac{\pi}{2} \end{array} \]