From: Brian West＜[e-mail]＞ To: James Woods＜[e-mail]>From: Brian West＜[e-mail]＞ To: James Woods＜[e-mail]＞ Re: Mobile Phone Service Date: December 20 Dear Mr. Woods, I am writing to let you know that there seems to be a problem with my most recent mobile phone bill. Since signing the contract on June 1st, I have been paying $65 every month. However, the bill in November was for $80. When I purchased my mobile phone at your store, I still remember that the contract provides for a fixed-rate service. Based on what I owed from June to October, it would seem that I was overcharged by $15. Please let me know if there was a change to the terms and conditions of the contract. I would appreciate it if you could look into the matter. Brian West
What is the purpose of the e-mail？

A. To purchase a new mobile phone.
B. To announce change in service plan.
C. To request a review of information.
D. To change terms of service.