Please could you help me for this problem. It's about engineering economics

Problem 1. Consider a plant costing $1,000,000 to build that produces a product A. For the same capital outlay a different plant can be erected to produce an alternative product B. Conditions are such that each plant will only be in operation for eight years and then both will be scrapped. The cash flows in each of the eight years obtained by product A and B are shown in the table below (Note that the-$1,000,000 in year O shows the investment). A choice is being made about which plant is more profitable, considering MARR=10%. Year Product A Cash Flows (S) Product B Cash Flows (S) 1,000,000 100,000 200,000 300,000 400,000 500,000 600,000 700,000 800,000 1,000,000 800,000 700,000 600,000 500,000 400,000 300,000 200,000 100, 000