A delivery service is buying 600 tires for its fleet of vehicles. One supplier offers to supply the tires for $75 per tire, payable in one year. Another supplier will supply the tires for $20,000 down today, then $55 per tire, payable in one year. What is the difference in PV between the first and the second offer, assuming interest rates are 8.3%? ..... OA. - $13,380 OB. - $3,568 O C. $8,920 OD. $13,380