A 40-years-old man lost consciousness on the street. In the admission department of the hospital, where he was taken, the patient was conscious; the skin was pale and moist. The heart borders are unchanged; the sounds are normal, pulse is 96 bpm, small, and soft. BP is 90/60 mm Hg. ECG: I, AVL, V4-V6 leads – deep, wide Q wave, the depression of S-T segment, and the positive T wave. What is your diagnostic assumption? A.Acute impairment of brain circulation B.Angina pectoris C.Acute myocardial infarction of the left wall of the left ventricle D.Acute myocardial infarction of the anterior-lateral wall of the left ventricle