A consumer's demand for CDs can be represented by a line with slope -b and intercept a. If the current price of CDs is $P, then the ratio of consumer surplus to total expenditures on CDs equals
A) (a - P)(a - bP).
B) 1/2(a - P)(a - bP).
C) D(a - bP).
D) (a - P)/P.
E) (a/b - P)/(2P).
E
Economics
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