Evaluate the following statement: The integral used to solve for boundary work, Wᵦₒᵤₙₐᵣᵧ =∫PdV, simplifies to Wᵦₒᵤₙₐᵣᵧ=P(V₂−V₁)
a. This is always true
b. This is only true for constant volume processes
c. This is only true for constant pressure processes
d. This is true for all polytropic processes