A 10 percent increase in the price of soda leads to a 20 percent increase in the quantity of iced tea demanded. It appears that:

A.
A 10 percent increase in the price of soda leads to a 20 percent increase in the quantity of iced tea demanded. It appears that:

B.
elasticity of demand for iced tea is 2 and is elastic.

C.
cross-price elasticity of demand for soda is -0.5.

D.
cross-price elasticity of demand for iced tea is -2.