If the demand for salad dressing increases when the price of lettuce decreases, the cross-price elasticity of demand between salad dressing and lettuce will be _ because these two goods are _.

If the demand for salad dressing increases when the price of lettuce decreases, the cross-price elasticity of demand between salad dressing and lettuce will be _ because these two goods are _.

A.negative; complements

B.zero; inferior

C.equal to 1; inelastic

D.negative; substitutes

正确答案：negative; complements