<prompt> True about Acoustic neuroma -Malignant tumorArises from vestibular nerveUpper pole displaces IX,X,XI nervesLower pole displaces trigeminal cranial nerve  <response>: Here Option a i.e. malignant tumor is incorrect as acoustic neuroma is a benign tumor.Option b: It arises from vestibular nerve is correctOption c: Upper pole displaces IX, X and XI nerveincorrect, as is evident from the diagram given in the text: Upper pole displaces III, IV and V nerve whereas lower pole displaces IX, X and XI nerve. 