类风湿因子阳性率最高的疾病是（）。

A.系统性红斑狼疮

B.风湿性关节炎

C.混合性结缔组织病

D.类风湿关节炎

E.骨关节炎

Woman: I am upset. You told my boss I had a part-time job
Man: I am sorry. I couldn’t help it.
Question: What does the man mean

A．He couldn’t help the woman at all.
B．He couldn’t hold back the secret.
C．He couldn’t possibly tell the boss.
D．He couldn’t decide who told the boss.