Question 1 5 pts A firm's bonds were selling at par value but have recently gone up in value and now sell at a significant premium? Which of the following could cause this? The general level of interest rates in the economy have gone up significantly. Investors perceive that the firm's risk profile has increased significantly. Investors perceive that the firm's risk profile has decreased significantly. The firm recently announced it would be issuing much more debt in order to buy back common stock