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
A 70 years old male patient presents with amblyopia, exeional chest pain, episodic tachycardia and extra systoles on FCC. What is the probable cause? 
Select and explain. 
A. Cocaine poisoning, B. Chronic nicotine poisoning, C. Arsenophagia, D. Cannabis ingestion
B: Chronic nicotine poisoning
Answer: B: Chronic nicotine poisoning 
Explanation: Answer- B. Chronic nicotine poisoningSymptoms of chronic nicotine poisoning are cough, wheezing, dyspnoea, anorexia, vomiting, diarrhea, anemia, faintness,tremors, impaired memory, amblyopia, blindness, irregularity of the hea with extra-systoles and occasionally attacks pain suggesting angina pectoris