Which of the following questions ought to be used to distinguish a winning strategy from a mediocre or losing strategy? a. did the strategy develop from an inclusive cooperative relationship between top-level management, line managers, and hourly personnel? b. is the strategy well matched to the company's situation, the company achieve a sustainable competitive advantage, and resulting in better company performance? c. has management responded to changing market conditions with emergent strategy elements? d. is the strategy built upon a viable business model? e. does the strategy strike a balance between shareholder interests and social responsibility?

David consumes two things: gasoline (g) and bread (b). david's utility function is u(g, b) = 10g^0.25 b^0.75. use the lagrange technique to solve for david's optimal choices of gasoline and bread as a function of the price of gasoline, p_g, the price of bread, p_b, and his income m. with recent decrease in the price of gasoline (maybe due to external shock such as shale gas production) does david increase his consumption of gasoline? for david, how does partial differential g/partial differential p_g depend on his income m? that is, how does david's change in gasoline consumption due to an increase in the price of gasoline depend on his income level? to answer these questions, find the cross-partial derivative, |partial differential^2 g/partial differential m partial differential p_g.