You are tasked with estimating the beta of a government-owner firm, and have found several prices of beta. A comparable company has a listed equity and debt betas of 1.5 and 0, respectively, but a debt to asset ratio of 0.5. If the firm you are tasked with analyzing has a debt to asset ratio of 0.9, and the debt is risk-free, What is the equity beta of this company

1. 0.75
2. 7.5
3. 3
4. 1
5. 1;5