In the Estimation of Demand,the "Identification Problem" Refers to

Multiple Choice

In the estimation of demand,the "identification problem" refers to

A) the problem of selecting the proper level of significance.
B) the problem of deciding whether to use time series or cross-sectional data.
C) the problem of separating out the effects of price on the quantity demanded when supply cannot be held constant.
D) the problem of having insufficient variation in prices.