An attorney and a client execute a valid retainer agreement that automatically renews from year to year. It provides that the attorney will charge the client $150 per hour for the attorney's services and $75 per hour for his paralegal's services. These amounts are reasonable rates compared to the average hourly rates in the jurisdiction where the attorney practices law. After the first year, the attorney increases those hourly rates to $175 and $100, respectively. The attorney does not communicate this change to the client, although the attorney bases the client's bills in the second year on the new hourly ratesThe client continues to use and pay for the services of the attorney and the paralegal during the second year of their agreement. Will the attorney be subject to discipline?