在常温常压下，取下列四种气态烃各1 mol，分别在足量的氧气中燃烧，消耗氧气最多的是[ ]

A．CH₄

B．C₂H₆

C．C₃H₈

D．C₄H₁₀

A financial analyst and CFA Institute member sends a preliminary research report on a company to his supervisor. The supervisor approves the report, but then the analyst receives news that causes him to revise downward the earnings estimate of the company. The analyst resubmits the report to the supervisor with the new earnings estimate. The analyst soon finds out that the supervisor plans to release the first version of the report with the first earnings estimate without a reasonable and adequate basis. In response to this the analyst must:（）

A. only insist that the first report be followed up by a revision.

B. only take the issue up with regulatory authorities. 

C. insist that the supervisor change the earnings forecast or remove his (the analyst’s) name from the report.