Particle A moves along X-axis with a uniform velocity of magnitude 10 m/s. Particle B moves with uniform velocity 20 m/s. along a direction making an angle of `60^(@)` with the positive direction of X-axis as shwon in the figure. The relative velocity of B with respect to that of A is

Options

A. 10m/s along X-axis
B. `10sqrt3` m/s along Y-axis (perpendicular to X-axis)
C. `10 sqrt 5` along the bisection of the velocities of A and B
D. 30 m/s along negative X- axis.