Which of the Following Statements Is FALSE

Which of the following statements is FALSE?

A) A biotech firm might be developing drugs with tremendous potential,but it has yet to receive any revenue from these drugs.Such a firm will not have taxable earnings.In that case,a tax-optimal capital structure does not include debt.
B) No corporate tax benefit arises from incurring interest payments that regularly exceed EBIT.
C) The optimal level of leverage from a tax saving perspective is the level such that interest equals EBIT.
D) In general,as a firm's interest expense approaches its expected taxable earnings,the marginal tax advantage of debt increases,limiting the amount of equity the firm should use.