题目内容
（请给出正确答案）
[主观题]
The discussion of the regional bank serves which of the following functions within the pas
sage as a whole？
A．It describes an exceptional case in which investment in service actually failed to produce a competitive advantage.
B．It illustrates the pitfalls of choosing to invest in service at a time when investment is needed more urgently in another area.
C．It demonstrates the kind of analysis that managers apply when they choose one kind of service investment over another.
D．It provides an example of the point about investment in service made in the first paragraph.
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