(a) Unless more restrictive procedures are stated in the articles, the board of directors may, by resolution duly adopted, issue from time to time, in whole or in part, common or preferred shares authorized by the articles.
(b) With the consent of the department, a bank or trust company may withdraw any offer to sell its common or preferred shares, whether issued pursuant to its articles or pursuant to subsection (a) of this Code section; and such shares may be held as authorized shares subject to future issuance in accordance with subsection (a) of this Code section.
(c) A bank or trust company may not, directly or indirectly, extend credit for the purpose of financing the original purchase of capital stock or capital debt issued by it or by a bank holding company to which it is affiliated.