If you use a linear model to identify an asset return and find that the historical $($observed$)$ return was much higher than the model estimate

$[$Select all statements that a true$/$correct$.$ Incorrectly selected statements will penalize your total score$]$

a$.$ You should be skeptical of your linear model and perform various statistical tests to attempt to verify the finding

b$.$ You might forecast that the stock price would rise

c$.$ You might conclude that there is a mispricing

d$.$ You might conclude that the stock was underpriced

e$.$ You might concluded that the stock was overpriced

f$.$ You might forecast that the price would fall