The cylindrical tube of a spray pump has radius R, one end of which has n fine holes, each of radius r. If the speed of the liquid in the tube is V, the speed of the ejection of the liquid through the holes is :

Question

( A ) $\frac{V^2R}{nr}$
( B ) $\frac{VR^2}{nr^2}$
( C ) $\frac{VR^2}{n^2r^2}$
( D ) $\frac{VR^2}{n^3r^2}$