Which of the following constitutes an ordered list of two input variables, two intermediate variables, and an output variable?

a. Lemonade stand (% sugar, % lemons, taste rating, material cost, total profit)

b. Chair manufacturing (wood type, saw type, stylistic appeal, waste, profit)

c. Chip manufacturing (time in acid, % silicon, % dopant, % acceptable, profit)

d. All of the above fit the definition.

e. Only the answers in parts “a” and “b” are correct.