Which condition indicates a periodontal rather than an endodontic lesion | B-IDS 09818001730, 08690014009

Which one of the following condition indicates a periodontal rather than an endodontic lesion?
A.Acute pain on percussion with no swelling.
B.Pain to lateral percussion with wide sulcular pocket
C.A deep narrow suicutar pocket to the apex with exudate.
D.Pain to palpation of the buccal mucosa near the tooth apex.

Ans. (B) Ref. National Boards Set II-K Component A-3 Q.192)