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Questions 5 and 1D refer to the following monopoly prot function: n=03+4axaz1aoxosoo (o 5 as: loo) Question 5 Which of the following is true? A. The total prot function is U-shaped because its second derivative is always positive. E. The total prot function is an inverted-U because its second derivative is always negative. C. The total prot function has two output levels at which marginal prot is equal to zero. D. The total prot function is maximized when the monopolist is producing the maximum level of output possible. E. None of the above is necessarily true. Question 1!] Which of the following is not true? Marginal revenue is equal to marginal cost when a = 2 The total xed cost is zero The output level at which the marginal cost curve cuts the marginal revenue curve from below is a = 3D The maximum value of the total prot function is It}. Boo Marginal revenue is equal to marginal cost when 0 = 3!}. no no