Trucks R' Us (TRUS) has a market capitalization of $142 billion, $78 billion in BB rated debt, and $10 billion in cash. Use the information of debt betas in the following table based on credit ratings. If Trucks R' Us' equity beta is 1.68, then their underlying asset beta is closest to: (hint: enterprise value equals Equity Debt - Cash) BO Rating AMA Average Default Rate 0.0% Recession Default Rate 0.0% Average Beta 0.05 AA 0.1% 10% 0.05 0.2 3.0 0.05 0.5% 2.2% 3.078.0% 0.10 0.17 5.5% 16.04 0.26 48.0% 0.31 To ooo