Mary purchases a bond with a principal of $3,000 and a coupon rate of 7% from the government for $2,700. Which statement about her bond purchase is true? The bond was sold at a premium, and the price was $90. The bond was sold at a discount, and the price was $90. The bond was sold at a premium, and the price was $108. o The bond was sold at a discount, and the price was $108