女性，40岁，因SLE口服皮质激素近2年，发热2周伴咳嗽，痰中少量带血，查肺无异常体征，胸片示右肺中野多发片状结节状影伴空洞，血沉45mm/h，PPD5U（-）。

对该患者PPD试验结果的解释哪项是错误的（）

A.阳性表示结核感染

B.强阳性可支持结核诊断

C.阴性可排除结核病

D.弱阳性提示卡介苗交叉反应

E.免疫抑制者诊断价值受影响

—Do you know Lucy's grandma? 

—Of course. She is a kind woman, but she has _______ for about a month since she _______ in the accident. [ ]

A. been dead; was killed

B. died; was killed 

C. been dead; killed

D. died; killed