This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: ENT
[{'content': 'Vestibular function is tested by -a) Galvanic stimulation testb) Acoustic reflexc) Fistula testd) Impedance audiometrye) Cold caloric test \nSelect and explain. \nA. acd, B. bde, C. cde, D. ace', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Clinical tests\n\nFistula testQ\nRomberg test\nGait\nPast-pointing and fallingQ\nHallpike maneuver (positional test)\n\nLab test\n\nCaloric test\n\n–– Modified (Kobrak’s test)\n–– Fitzgerald-Hallpike test (Bithermal caloric test)\n–– Cold-air caloric test by Dundas-Grant method. Done in case of perforation of tympanic\xa0membrane.\n\nElectronystagmography\nOptokinetic test\nRotation test\nGalvanic testQ\nPosturography', 'role': 'assistant'}]