For the past decade, Christina Pederson, CFA, has managed the account of Susan Stefansson and in that time developed a close relationship with her client. Stefansson has a beach house in the Bahamas which she offers Pederson and her family free use of for two weeks as a reward for the excellent returns generated in her account. Pederson is so busy at work she doer not tell anyone where she is going for vacation. When accepting Stefansson’s offer, Pederson least likely violates the CFA Institute Standard relating to:（）

A. loyalty to employer.

B. disclosure of conflicts.

C. Independence and objectivity.

1岁患儿，高热、呕吐10小时，体温40℃，面色青灰，嗜睡，前囟隆起，颈软，咽充血，心肺（-），腹软，肝脾不大，克、布氏征（-）。血常规：白细胞16×10⁹/L，中性粒细胞0.78，淋巴细胞O.22。脑脊液：外观清亮，细胞数10×10⁹/L，蛋白质300mg/L，糖3.6mmol/L，氯化物115mmol/L。诊断为：化脓性脑膜炎（早期），为确诊应首选哪种检查（）

A.复查脑脊液找致病菌

B.血培养

C.咽拭子培养

D.头颅CT

E.盐水灌肠查大便常规