We Face the Largest Risk of Getting a Spurious Result $\gamma$

Multiple Choice

We face the largest risk of getting a spurious result when:

A) Regressing a variable with a unit root against a variable without a unit root.
B) Regressing a variable with a unit root against a variable with a unit root.
C) Regressing a variable with $\gamma$$\lt$ 1
D) When errors are autocorrelated.