QUESTION 3 You pay $970 for a 90-day T-bill. It is worth $1,000 at maturity. What is its discount rate? O A. 7,5% OB.9% O C. 12% OD. 15% QUESTION 4 You pay $995 for a 270-day T-bill. It is worth $1,000 at maturity. What is its discount rate? OA..67% . 6.89 OC. 7.1% OD.7.34%