患者男，3个月前开始出现上腹部不适，食欲缺乏。1个月来出现黄疸进行性加重，伴体重减轻，全身明显黄染，肝未触及，深吸气时可触及肿大的胆囊底部，不伴触痛。化验：血胆红素15mg/dl，尿检：胆红素阳性。以下诊断中最可能的是（）

A.肝炎

B.胆石症

C.胰头癌

D.慢性胰腺炎

E.肝癌

_____ his parents are at home, he cooks by himself. [ ]

A. If

B. Even though

C. As if

D. Whether