Porter's _____ Help(s)companies Identify General Strategies, Whereas His _____ Help(s)to

Porter's _____ help(s) companies identify general strategies, whereas his _____ help(s) to identify specific activities where companies can use the strategies for greatest impact.

A) Value chain model, competitive forces model
B) Primary activities, support activities
C) Competitive forces model, primary activities
D) Competitive forces model, value chain model
E) Value chain model, support activities