A rigid body rotates with constant angular velocity $\omega$ about the line $x=\frac{y}{2}=\frac{z}{2}$, the speed of particle at the instant, it passes through the point $(2,3,5)$ is :
(a) $\omega$
(b) $2 \omega$
(c) $3 \omega$
(d) $\sqrt{2} \omega$