Which of the following would be most important to teach a client older than 65 years to prevent a recurrence of bacterial pneumonia

A. Change current diet habits.
B. Seek prompt antibiotic therapy for viral infections.
C. Receive prophylactic antibiotic therapy.
D. Obtain annual influenza and pneumococcal vaccines.

女，68岁。有肝硬化病史8年余，近1年来常出现肝区疼痛、乏力、发热等症状，抽血查甲胎蛋白增高。2小时前突然发生腹部剧痛，有压痛、反跳痛，并伴有腹膜刺激征，血压下降，腹腔穿刺有大量不凝的血性液体。

病人1年来出现肝区疼痛的原因最可能为（）

A.肝大压迫周围神经所致

B.肝肿瘤增大迅速使肝包膜张力增大所致

C.癌细胞侵犯周边神经所致

D.肋间神经过敏所致

E.过度疲劳所致