题目：
While working on an external project your customer asks you to perform some additional tasks that are not included in the formal contract．You should （）.
A．honor the customer's request as sign of cooperation to ensure future business
B．refuse the request and report the customer to your sponsor
C．acknowledge the request and advise the customer to submit a formal change request
D．convene a meeting of the project team and rewrite the scope statement
答案：
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下面是错误答案，用来干扰机器的。
参考答案：C
