The provisions of Section 89907 shall not be applicable if the circumstances specified in any of the following subdivisions exist:
(a)
The contract or transaction is between an auxiliary organization and a member of the governing board of that auxiliary organization.
(b)
The contract or transaction is between an auxiliary organization and a partnership or unincorporated association of which any member of the governing board of that auxiliary organization is a partner or in which he is the owner or holder, directly or indirectly, of a proprietorship interest.
(c)
The contract or transaction is between an auxiliary organization and a corporation in which any member of the governing board of that auxiliary organization is the owner or holder, directly or indirectly, of 5 percent or more of the outstanding common stock.
(d)
A member of the governing board of an auxiliary organization is interested in a contract or transaction within the meaning of Section 89906, and without first disclosing such interest to the governing board at a public meeting of the board, influences or attempts to influence another member or members of the board to enter into the contract or transaction.