Suppose that during 2017, the market for architectural jobs increases by 10%. Assume that any increase in market share more than 10% and any decrease in selling price are the result of strategic choices by Compton's management to implement its strategy.

Required

Calculate how much of the change in operating income from 2016 to 2017 is due to the industry-market-size factor, product differentiation, and cost leadership. How successful has Compton been in implementing its strategy? Explain.