Which of the Following Is Not a Property of Isoprofit

Multiple Choice

Which of the following is not a property of isoprofit curves graphed in Probability of Injury (x-axis) versus Wage (y-axis) space?

A) All points on each isoprofit curve yield the same level of profit.
B) Profit-maximizing firms are indifferent as to where they operate on any given curve.
C) Isoprofit curves going out along the x-axis yield higher profits.
D) Isoprofit curves going up along the y-axis yield higher profits.
E) Isoprofit lines are upward sloping.