please solve with steps

Problem 2: Consider the following two projects: BOTANI Project A1 Project A2 Investment Required at n=0 $900,000 $1,200,000 1 2 3 $400,000 $340,000 $300,000 $240,000 $200,000 $150,000 $200,000 $300,000 $350,000 $440,000 $400,000 $350.000 4 5 6 (a) Calculate the profitability index for A1 and A2 at an interest rate of 6%. (b) Determine which project(s) you should accept (1) if you have enough money to undertake both and (2) if you could take only one due to a budget limit