I need to find abnormal return

On Oct 15, the stock of Pine Medical had a return of -1.2%%, while the S&P 500 Index had a return of -0.5%. If the stock of the company has a beta of 1.4 and the T-bill rate is -0.08%, calculate its abnormal return. -0.668% -0.532% +0.532% -0.558%