Which of the Following Statements Is False About "Borrowing Capacity

Which of the following statements is false about "borrowing capacity"?

A) It is an especially important point in international capital budgeting analysis because of the frequency of large concessionary loans.
B) It creates tax shields for APV analysis regardless of how the project is actually financed.
C) It is synonymous to the "project debt."
D) It is based on the firm's optimal capital structure.