Suppose the price of salt increases by 25 percent​ and, as a​ result, the quantity of pepper demanded​ (holding the price of pepper ​constant) increases by 4 percent. The​ cross-price elasticity of demand between salt and pepper is nothing. ​(Enter your response rounded to two decimal places and include a minus sign if​ appropriate.) In this​ example, salt and pepper are ▼ substitutes not related complements . ​Instead, suppose salt and pepper were complements. If​ so, then the​ cross-price elasticity of demand between salt and pepper would be A. negative. B. zero. C. positive. D. greater than 1. E. greater than minus1.