The decrease in volume is given by the equation ___________

• A. ∆v=-V₀ ∆σ’
• B. ∆v=-aᵥ V₀ ∆σ’
• C. ∆v=-mᵥ ∆σ’
• D. ∆v=-mᵥ V₀ ∆σ’