What will be properties of the OLS estimator in the presence of multicollinearity?

کثیر خطوط کی موجودگی میں او ایل ایس تخمینہ کنندہ کی خصوصیات کیا ہوں گی؟

It will be consistent unbiased and efficient

It will be consistent and unbiased but not efficient

It will be consistent but not unbiased

It will not be consistent

In the presence of multicollinearity, the OLS estimator will still be consistent unbiased and efficient.