Ninja Turtle Industries (NTI) needs to raise capital. The firm only cares about price. Given the following information about NTIs capital, what type of capital is the cheapest, and which one should it use to raise money?

Bonds: Current Price: $600 Coupon: 7% Time: 10 Par Value: $1000 Coupon Paid: Semi-annually

Stock: Beta: 0.8 Market Risk Premium: 8% Historical Market Rate: 10% 3-Month T-Bill Rate: 2%