我们要尊重、关心和爱护婴儿，在与婴儿交流时语调尽量要（）

A、用儿语

B、声调要高、声音要洪亮

C、自然、音量适当、重要的话加强语气

D、尽量大声说话

Wes Smith, CFA, works for Advisors, Inc. In order to remain in compliance with Standard Ⅴ (A), Diligence and Reasonable Basis, Smith may recommend a security in which of the following situations（）

A. Advisors’ research department recommends a stock.

B. Smith overhears a highly-regarded analyst from a rival firm recommend that the security is a good investment.

C. Smith reads a favorable review of the security in a widely read periodical.