OG详解-OG8 数学1 Q16

Choice A is incorrect. This expression represents the area, in square centimeters, of the cutting board, not its length, in centimeters. Choice B is incorrect. This expression represents the width, in centimeters, of the cutting board, not its length. Choice C is incorrect. This is the difference between the length, in centimeters, and the width, in centimeters, of the cutting board, not its length, in centimeters.