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QUESTION 2 John enjoys boxing and engages a personal trainer to improve his health and fitness. As part of a special offer, John pays $0 for the first session and $30 for each subsequent session. John gains $200 of benefit from attending 6 sessions and $250 of benefit from attending 7 sessions. Which of the following statement(s) are true: John should attend the seventh session because the marginal benefit is greater than the marginal cost. The marginal benefit of attending the seventh session is $40. John should not attend the seventh session because the marginal benefit is less than the marginal cost. The marginal cost of attending the seventh session is $50