[求助]一道黑脸，请教各位

Several of a certain bank’s top executives have recently been purchasing shares in their own bank.  This activity has occasioned some surprise, since it is widely believed that the bank, carrying a large number of bad loans, is on the brink of collapse.  Since the executives are well placed to know their bank’s true condition, it might seem that their share purchases show that the danger of collapse is exaggerated.  However, the available information about the bank’s condition is from reliable and informed sources, and corporate executives do sometimes buy shares in their own company in a calculated attempt to calm worries about their company’s condition.  On balance, therefore, it is likely that the executives of the bank are following this example.

In the argument given, the two boldfaced portions play which of the following roles?

A The first describes the circumstance the explanation of which is the issue that the argument addresses; the second states the main conclusion of the argument.
B The first describes the circumstance the explanation of which is the issue the argument addresses; the second states a conclusion that is drawn in order to support the main conclusion of the argument.
C The first provides evidence to defend the position that the argument seeks to establish against opposing positions; the second states the main conclusion of the argument.
D The first provides evidence to support the position that the argument seeks to establish; the second states a conclusion that is drawn in order to support the argument’s main conclusion. 
E Each provides evidence to support the position that the argument seeks to establish.
   Answer:A

我选的D，请各位指教一下，疑虑主要有第二个BF是main conclusion吗？还有一个比较BC，就是A B的头半句应该怎么翻译

这道一定是A\C两个选项在进入最后决选

因为第二句明显为整篇argument的main conclusion

A第一句为描述论证提出的议题解释情形

C表示提出证据

所以ANS: A, 因为第一句不是evidence

请指教

楼主…我回的帖子已翻了第一句的意思….

唉…回家面壁思过…