I'm being challenged by these multiple choice questions, kindly assist.

Example: If you believe that for sub-question 1.6 option C Is correct, then write down: 1.6. C. .1. The extent of a market can be described as the boundaries of the market in terms of both region and a few types of products produced and sold. B. a market with a few buyers and sellers, so that a single buyer or seller may have a significant impact on price. C. a market with many buyers and sellers, so that no single buyer or seller has a significant impact on price. D. the boundaries of the market, both geographical and in terms of range of products produced and sold. E. the practice of buying at a low price at one location and selling at a high price at another location. 1.2. If the government imposes a price ceiling above the equilibrium price A. this is usually done to protect the interests of the producer. B. this is usually done to protect the interests of the consumer C. it will have no impact on the equilibrium price and quantity. D. all consumers will be better off. E. this typically results in shortages on the markets. 1.3. Diminishing marginal returns imply A. decreasing average variable costs. B. increasing marginal costs C. decreasing marginal costs D. decreasing average costs E. decreasing sales