Final answer:
The opening point of the Yin Wei meridian is PC-6 (Neiguan), and the Xi Cleft point is PC-4 (Ximen), making option A the correct answer.
Step-by-step explanation:
The opening point of the Yin Wei meridian is PC-6 (Neiguan), and the Xi Cleft point of the Yin Wei meridian is PC-4 (Ximen). Therefore, the correct answer is A. Opening Point: PC-6 (Neiguan), Xi Cleft: PC-4 (Ximen). These points are significant in traditional Chinese medicine and are used in acupuncture and acupressure to promote healing and balance in the body.