Two Identical Vertical Springs S₁ and S₂ Have Masses M₁

Two identical vertical springs S₁ and S₂ have masses m₁ = 400 g and m₂ = 800 g attached to them. If m₁ causes spring S₁ to stretch by 4 cm, what is the ratio of the potential energy of S₁ and S₂? Use g = 10 m/s².

A) 2:1
B) 1:2
C) 1:3
D) 4:1
E) 1:4