Which of the following statements concerning the impact of competition on a small company's prices is true?
选项：

A:When setting prices, a business owner must either match or beat competitors' prices on similar products or services.
B:Because federal laws prohibit the practice as an unfair trade practice, business owners should not monitor their rivals' prices on identical items.
C:When going up against larger, more powerful rivals, small firms should consider using nonprice
D:All of the above