This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Poisoning, Subject name: Forensic Medicine
Earliest feature of dhatura poisoning - 
Select and explain. 
A. Hyperpyreia, B. Dialted pupils, C. Mental confusion, D. Bitter taste
D: Bitter taste
Answer: D: Bitter taste 
Explanation: Clinical Features of datura * Dryness of mouth (dry as bone) * Bitter taste * Difficulty in talking * Dysphagia--- these are first noted * Dilated pupils * Diplopia * Difficulty in vision (blurring of vision, blind as bat) * Dry hot skin with flushing (red as beet) * Hyperpyrexia (hot as hare) * Drunken gait (ataxia) * Hyperreflexia * Convulsions * Delirium, hallucinations, agitation, amnesia, incoherence, visual or auditory hallucinations (mad as a hen) * Deficit of recent memory. Remote memory undisturbed * Dysuria * Distention of bladder (retention of urine) * Death. REF;THE SYNOPSIS OF FORENSIC MEDICINE:KS NARAYANA REDDY;28th EDITION;PAGE NO 344