The Market Demand for Wheat Is Q = 100 -

The market demand for wheat is Q = 100 - 2p + 1p_b + 2Y.If the price of wheat,p,is $2,and the price of barley,p_b,is $3,and income,Y,is $1000,the income elasticity of wheat is

A) 2 ∗ (1000/2099) .
B) 2.
C) 1/2 ∗ (1000/2099) .
D) Cannot be calculated from the information provided.