1. (a) Identification of the type of budget or equal payment plan if more than one plan is offered.
2. (b) The total of the year's budget or equal payment amounts billed to the end of the period covered by the current bill.
3. (c) The dollar amount billed for tariff items during the same period as in subdivision (b) of this section.

4. (d) Debit or credit balance to be shown as D or C on the bill and defined as follows:

   D Amount due company

   C Amount in customer favor

On either the bill or in an addendum attached to or enclosed with the bill shall be shown: