Company A$,$Company B$],[$Market Value of Equity,$$400,000,$$$800,000],[$Market Value of Debt,$$100,000,$$$600,000],[$Cost of Equity,$9\%,9\%],[$Cost of Debt,$3\%,4\%],[$Tax Rate,$35\%,35\%]]$

Based solely on their current weighted average cost of capital, which company should pursue an investment opportunity with an expected return of $6\%?$

Neither Company A nor Company B

Only Company A

Both Company A and Company B

Only Company B