(b) No binder shall be valid beyond the issuance of the policy with respect to which it was given, and no agent or insurer shall issue a binder covering a period in excess of ninety days from its effective date.
(c) If the policy has not been issued a binder may be extended or renewed beyond such ninety days with the written approval of the commissioner, or in accordance with such rules and regulations relative thereto as the commissioner may promulgate.
(d) This section shall not apply to conditional receipts issued by life and accident and sickness insurers, nor to policies of group insurance.