Volume Stress and Strain: Two Compressible Solids Are Formed into Spheres

Volume stress and strain: Two compressible solids are formed into spheres of the same size. The bulk modulus of sphere two is twice as large as the bulk modulus of sphere one. You now increase the pressure on both spheres by the same amount. As a result of the increased pressure, how is the change in volume of sphere two (△V₂) related to the change in volume of sphere one (ΔV₁) ?

A) ΔV₂ = 2ΔV₁
B) ΔV₂ = 4ΔV₁
C) ΔV₂ = ΔV₁
D) ΔV₂ = 1/2ΔV₁
E) ΔV₂ = 1/4ΔV₁