Show all your work please. I need step by step solutions to solve all parts of the problem and show work. Will provide a positive rating if answer for all parts is provided and work is shown

The following is the question that needs to be solved:

You are considering the following two mutually exclusive investment opportunities. If your cost of capital is 10%, which is better. Explain your reasoning and support numerically. Capital is not rationed. Opportunity A would cost $1000 and return $400 per year for 4 years. Opportunity B would cost $2000 and would return $1000 per year for 3 years