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: Forensic Medicine
Which type of cattle poisoning occurs due to ingestion of LINSEED plant? 
Select and explain. 
A. Aconite, B. Atropine, C. Pilocarpine, D. Hydrocyanic acid
D: Hydrocyanic acid
Answer: D: Hydrocyanic acid 
Explanation: Hydrocyanic acid is also used as cattle poison. Cattle poisoning has been known to occur from eating linseed plant because of the natural development of a cyanogenic glycoside which may liberate hydrocyanic acid. Ref: Essentials of Forensic Medicine and Toxicology By Dr K S Narayan Reddy, 27th Edition, Pages 559-60