please help! need question 8. shows 2.76 is wrong

[Q7.Q9] are based on the following information: You are an analyst doing research on Continental Resources (ticker CLR), an oil driller. CLR's debt-to-equity ratio is 3/7. The firm's cost of debt is 3.5% and cost of equity is 13%. Assume that the risk-free rate is 3% and the market risk premium is 5%. What is the firm's current equity beta? What is the firm's current debt beta? 2.0,0.2 1.5,0.1 1.5,0.2 20,0.1 Question 8 6 pts What is the firm's unlevered equity beta? (i.e. what is the firm's equity beta if the firm were financed 100% by equity? 1.25 276 1.43 1.52