You are interested in evaluating the performance of the Rastalos fund. You believe that the right factor model is a four-factor model: the Fama-French 3-factor model to which a momentum factor is added. You have gathered historical monthly excess returns of the fund from January 1990 to September 2022. You run a regression of the fund's excess return on the four factors and an intercept and obtain the following results:

A)To which factor(s), if any, is the fund exposed? Justify your answer?

B) Did the fund generate alpha over the estimation period?