An increase in the price of Good A by 20 percent results in a decrease in the quantity demanded of Good B by 2 percent. Goods A and B

A. are complements with a cross -price elasticity of demand of -0.1

B. are unrelated goods

C. are substitutes with a cross-price elasticity of demand of 40

D. are complements with a cross- price elasticity of demand of 10

E. are substitutes with a cross-price elasticity of demand of -10