An aquarium wants to install a new fish tank with a parabolic glass dome fitted at its bottom to allow visitors to look at the marine life from below. The glass dome will be 60 feet in diameter and will have a depth of 4 feet. Find the equation of the parabolic cross-section of the dome.

Which Equation?

A) y^2 = 16/30 x

B) y^2 = 4/15 x

C) y^2 = 1/225 x^2

D) y^2 = 15/14 x^2

E) y^2 = 1/15 x^2