carefuly solve this question and show all steps on how the answer was found so i can leave a quick like.

In a particular year, you earned a return of 1% by making the following investments in asset classes: The return on a bogey portfolio was 2%, calculated from the following information. The contribution of security selection within markets to your total abnormal return was: 1.00% 0.80% 1.00% 1.80%