An investor is considering the purchase of a 2-year floating-rate note that pays interest semiannually. The coupon formula is equal to 6-month T-Bill rate plus 60 basis points quoted margin. The current value for 6-month T-bill rate is 4% (annual rate). The price of this note is 98.1325. What will the discount margin be, 70, 80, or 90 bps?