A bullet is fired from ground level with a speed of $150\frac{m}{s}$ at an angle $30\mathrm{.}0$ above the horizontal at a location where $g=10\mathrm{.}0\frac{m}{s}2.$ What is the horizontal component of its velocity when it is at the highest point of its trajectory?

$130$ m$/$s

$150$ m$/$s

$75\mathrm{.}0$ m$/$s

$0\frac{m}{s}$

$10\frac{m}{s}$