please show work

Assume a $300,000 investment and the following cash flows: Year Product A Product B 1 $90,000 $50,000 2 $90,000 $80,000 3 $60,000 $60,000 4 $20,000 $70,000 5 $10,000 $50,000 6 $30,000 $60,000 Which alternative would you select under the payback method