(7) Core capital The term “core capital” means, with respect to an enterprise, the sum of the following (as determined in accordance with generally accepted accounting principles): (A) The par or stated value of outstanding common stock. (B) The par or stated value of outstanding perpetual, noncumulative preferred stock. (C) Paid-in capital. (D) Retained earnings. The core capital of an enterprise shall not include any amounts that the enterprise could be required to pay, at the option of investors, to retire capital instruments.