Which statement best describes a requirement in the AICPA Code of Professional Conduct that applies when you receive a commission or a referral fee for referring a client to another service provider?

a. You must monitor the delivery of that other service to the client.

b. You must mention the fee arrangement to your firm's liability carrier.

c. You must provide your client a written disclosure about the fee.

d. You must tell the client verbally that you will be receiving a fee.