1. All of the following are among the guidelines for good spreadsheet models, except?

a. Inpits and parameters should be clearly identified.

b. The most important factors (variables) should be selected

c. All variables should be clearly defined and labeled

d. Parameters should be "hard wired" intoequations

e. The appearance of the model should be improved by using proper formatting

2. Which of the following about crossover point is not true in general?

a, At corssover opint, two options yield the same profit

b. Corssover point is the demand at which you be indifferent between your current mode of operation and the new option

c. At crossover point, profit cannot be negative

d. Crossover opint is the price at which you be indifferent between your current mode of operation and the new option