A 45 year male presented to the medical outpatient department with the complaint of chest discomfort after fast walking with difficulty in breathing. His blood pressure at the time of presentation in OPD was 156/96. The patient is not taking any antihypertensive drug. a. Type of hypertension patient is suffering from? b. WHO classification of hypertension. c. Enumerate types of Ischaemic heart disease. d. Draw a labeled microscopic diagram of Atherosclerotic plaque.