Which of the following items is where the date(s) of service are documented?

Opaque white lesions cover right and left buccal mucosae, vestibules, and floor of the mouth of a 15-year-old girl. The lesions do not rub off and are asymptomatic. Biopsy showed intracellular edema and perinuclear condensation of keratin in keratinocytes. There is no inflammatory cell infiltrate of submucosa. This description suggests which of the following?

a. Leukoedema b. Cheek chewing c. Idiopathic leukoplakia d. Lichen planus e. White sponge nevus

Name the three parts of a contract