Assume that you could spend an extra hour studying economics or sleeping. You decide to study economics. (Wise choice!) Given that you chose the study option you must have concluded that the expected extra benefit of studying one more hour was greater than, or equal to, the expected extra cost. O "the expected extra benefit of studying one more hour was greater than, or equal to, the expected extra cost." and "the expected extra benefit of studying one more hour, expressed as a chance at a higher grade in economics, was greater than or equal to the expected extra cost of studying, expressed in terms of lost sleep." are correct O the expected extra benefit of studying one more hour, expressed as a chance at a higher grade in economics, was greater than or equal to the expected extra cost of studying, expressed in terms of lost sleep. O the total benefit of studying was greater than the total cost of studying.