题目内容：
根据下面内容，回答题 Questions90-94refertothefollowingletters.
Februaryl8th
RuthWalter
2921CypressLane
Smithfield,UT00375
DearMs.Walter,
Ithascometoourattentionthatyouhavefailedtoremitpaymentforserviceprovidedduringthetwobillingperiodsof7/15--8/14and9/15--10/14lastyear.
Ourrecordsindicatethatmultiplebillsfortheseperiodshavebeensenttoyouraddresswith-outreply.Atthispoint,weareregrettablyrequiredtotakestrongermeasures.IfbyApril15wehavenotreceivedpaymentinfull,includingalllatefeescharged,wewillbeforcedtoterminateservicetoyourresidence.
Forfurtherinformationaboutthisaction,ortoverifytheamountofyouroutstandingbalance,pleasecallourCustomerServiceCenterat1-$88-555-3802,orwritetothefollowingaddress:
AccountsPayableDivision
NorthernUtahGas&Power
55755StateHighway16
Logan,UT00378
February27th
AccountsPayableDivision
NorthernUtahGas&Power
55755StateHighway16
Logan,UT00378
Servicerepresentative,
Irecentlyreceivedanotificationofoutstandingchargesonmyaccount.Iamveryconfusedanddistressedbythesituationoutlinedinyourletter.
Firstofall,IamcertainthatIpaidforallservicesduringthetwobillingperiodinquestion.Thepaymentswereontimeandforthecorrectamount.Iusedyourcompany'sautomatedtelephonebillingsystemandpaidwithmycreditcard.Iamincludingtransactionreceiptsfrommycreditcardcompanythatlistthesepaymentsandthedatesonwhichtheywereprocessedbyyourcompany.
AfterIhadpaidthen,Ididreceivemultiplebillsfortheperiods7/15--8/14and9/15--10/14asstatedinyourletter.Itriedrepeatedlytoreportthiserrortoyourcompanyviathecus-tomerserviceemailsystem,butIneverreceivedaresponse.Iamalsoattachingcopiesofthesee-mailsforyourreview.
ThesedocumentsclearlyshowthatIhavemadeallpaymentsinatimelyfashion,andIhopetheywillhelpyouresolvethissituation.Ifyouhaveanymorequestionsforme,pleasecontactmebyphone(555-7690)oremail(rwalt79@mzmail.com).
RuthWalter
WhydidNorthernUtahGas&PowerwritetoMs.Walter? A．Toannouncerecentchangestoitsavailableservices
B．Tonotifyherofanewpolicyregardinglatefees
C．Toapologizeforoverchargingheraccount
D．Toinformherofpenaltiesshemaybesubjectto
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