Find an Equation for the Surface Consisting of All Points $\text { three }$

Find an equation for the surface consisting of all points P for which the distance from P to the x-axis is $\text { three }$ times the distance from P to the yz-plane.

A) $9 x ^ { 2 } = y ^ { 2 } + z ^ { 2 }$
B) $3 x ^ { 2 } = y ^ { 2 } + 3 z$
C) $x ^ { 2 } - y ^ { 2 } - z ^ { 2 } = 3$
D) $3 x ^ { 2 } = y ^ { 2 } - 3 z ^ { 2 }$
E) $x ^ { 2 } + y ^ { 2 } + z ^ { 2 } = 9$