Please show all your work and calculations, thanks!

3. The following three groups of mutually exclusive proposals (A, B and C) are available to a company. Using return on incremental investment and total Present Worth cost, identify the best proposal in each group for an MARR of 14% and a study period of 10 years. Proposal Initial cost Annual cost A1 A2 ?? A4 B1 B2 B3 $35,000 $42,000 $40,000 $41,000 $50,000 $37,000 $55,000 $31,000 $70,000 $38,000 $75,000 $36,000 $90,000 $33,000