A female patient aged 45 years has multiple non-carious lesions and c/o sensitivity. On examination deep cervical abrasions are seen in all posterior teeth. Intra oral sinus is evident w.r.t. 24 & 25. Gingival recession is present in mandibular anterior teeth with gingival inflammation and bleeding on probing.

Any investigations required?: (A) IOPAR w.r.t. 24 & 25, (B) Percussion and palpation test, (C) Bite test, (D) Pulp vitality tests
Answer is A. None