A 48-year-old man presents to the emergency with repeated BP recording of 154 by 96 mm of Hg over two separate visits. He has no history of diabetes, chronic kidney disease, ischemic heart disease, heart failure, bronchial asthma, or gout. He is a non-smoker with normal renal function and serum electrolytes. His BMI is 27 kg per meter square. Lifestyle modification had been advised for the last three months. Apply the WHO-p drug concept to select the most appropriate drug for the patient.