Need help please! Thanks

Assume you make the following investments: - A $10,000 investment in a 10 -year T-bond that yields 6.50%, and - A $20,000 investment in a 10 -year corporate bond with an A rating and a yield of 8.20% Based on this information, and the knowledge that the difference in liquidity risk premiums between the two bonds is 0.40%, what is your estimate of the corporate bond's default risk premium? 1.82% 1.30% 1.70% 2.21%