I am not sure how to solve this... help appreciated

Your friend asks your advice. He is selling his car. He has three offers and asks you which one he should accept. He can invest his money at a rate of 7.15% (that is the I). What are the values of these 3 offers TODAY? Here are the offers: A. Selling Price: $6,700,PMT:$6,700 cash today B. Selling Price: $6,700, PMT: $4,200 cash today and $2,500 cash 3 years from now. C. Selling Price: $7,200,PMT : $1,500 cash today and $5,700 cash 3 years from now $6,800.00,$6,304.65 and $6,887.21 $6,600.00,$6,140.98 and $6,990.16 $6,600.00,$7,149.02 and $7,890.20 $6,700.00,$6,232.19 and $6,133.38 $6,700.00,$7,275.51 and $8,512.15