5. The exercise of joint negotiation rights by two or more independent physicians or dentists who are practicing in the service area of a carrier pursuant to this act shall conform to the following criteria:
a. the physicians or dentists may communicate with each other concerning any contractual term or condition to be negotiated with the carrier;
b. the physicians or dentists may communicate with the joint negotiation representative authorized to negotiate on their behalf with the carrier concerning any contractual term or condition;
c. the joint negotiation representative shall be the sole party authorized to negotiate with the carrier on behalf of the physicians or dentists as a group;
d. the physicians or dentists may, at the option of each physician or dentist, agree to be bound by the terms and conditions negotiated by the joint negotiation representative; and
e. when communicating or negotiating with a joint negotiation representative, a carrier may offer different contractual terms or conditions to, or may contract with, individual independent physicians or dentists.