This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hypeension, Arrhythmias, Dyslipidemia, Subject name: Pharmacology
Devesh is working as a CEO in a company. He has a traveling job. He is a known diabetic, controlled on oral hypoglycemic drugs. On his recent visit to the doctor, his blood pressure was found to be 164/102 mm Hg. Most suitable drug for this patient should be? 
Select and explain. 
A. Propanolol, B. Enalapril, C. Clonidine, D. Hydrochlohiazide
B: Enalapril
Answer: B: Enalapril 
Explanation: ACE inhibitors (Enalapril) are safe and effective agents in diabetic patients with hypeension. Thiazides and b-blockers (Propanolol) are contraindicated in diabetic patients. As the patient has frequent travelling job, he is likely to miss the doses. Therefore, clonidine should be avoided to prevent rebound hypeension.