The following transactions are excepted from the prohibitions of section 330—
(a)a loan or quasi-loan by a company to its holding company, or a company entering into a guarantee or providing any security in connection with a loan or quasi-loan made by any person to its holding company;
(b)a company entering into a credit transaction as creditor for its holding company, or entering into a guarantee or providing any security in connection with a credit transaction made by any other person for its holding company.