i got these wrong, please help:

Question 15 0.75 points & Saving Answer A freeze that destroys half the coffee crop in South America would likely raise the price of coffee. As a result which of the following would happen? O Reduced quantity demanded for both coffee and tea. O Reduced demand for both coffee and lea. O Reduced demand for coffee and increased demand for tea Reduced quantity demanded for coffee and increased demand for tea.Question 16 0.75 points A monopoly outcome where MR-0 means, the Monopoly firm has: O Maximized its profit O Minimized its cost O Maximized its total minverve Q Minimized its total reverie.Question 18 0.75 points Sri Answer The sum of the marginal cost of all units produced is: Average Total Cost O Average Variable Cost O Total Cost Total Variable Cool0.75 points Question 20 A Monopoly earnis zero economic profit when it's regulated by: Marginal cost pricing. O Variable cost pricing. O Fixed cost pricing O Average cost procig