Question 29 (2 points) Consider the demand equation for cigarettesIn Q = a + 3In P + u where Q, P, and u denote the quantity, price and unobserved error term respectively. If a research runs OLS regression based on the above equation, the OLS estimator is consistent and asymptotically normal. the OLS estimator is biased due to sample selection. the OLS estimator is biased due to simultaneity the OLS estimator is biased due to measurement error