Bệnh đột quỵ của ông ấy là do cục máu đông trong động mạch cảnh gây ra. A. His shock was caused by a blood clot in his carotid artery. B. His stroke was caused by a blood clot in his carotid artery. C. His pneumonia was caused by a blood clot in his carotid artery. D. His typhoid was caused by a blood clot in his carotid artery.