MCQ
It is found that on walking $x$ meters towards a chimney in a horizontal line through its base, the elevation of its top changes from $30^{\circ}$ to $60^{\circ}$. The height of the chimney is
- A$3 \sqrt{2} x$
- B$2 \sqrt{3} x$
- ✓$\frac{\sqrt{3}}{2} x$
- D$\frac{2}{\sqrt{3}} x$

