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

第一位专职青少年节目主持人，曾主持《七巧板》节目的是什么姐姐？