Let the Position Function of a Particle Be R (T) $\sqrt { 3 }$

Multiple Choice

Let the position function of a particle be r (t) = sin 3t i+cos 3t j+sin 4t k. Find the smallest value of its speed.

A) 1
B) 2
C) 9
D) $\sqrt { 3 }$
E) 0
F) $\sqrt { 10 }$
G) $\sqrt { 2 }$
H) 3