Question: Consider the linear regression model y = Bo + Bix+ u, where the regressor x may be correlated with the error term u. A poor

Consider the linear regression model y = Bo + Bix+ u, where the regressor x may be correlated with the error term u. A poor instrumental variable for the regressor x would be one that O a. predicts x. O b. predicts y after x is controlled for. O c. is uncorrelated with u. O d. is not entirely related to x. O e. None of the listed answers is correct. Clear my choice
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