Your network consists of a single Active Directory domain. You have a Web server named server1.contoso.com that runs Windows Server 2003 Service Pack 2 （SP2）. Users access a Web site on Server1 by using the URL http：//server1.contoso.com. Users also access the Web site on Server1 by using the URL http：//192.168.1.10. You need to configure DNS to enable users to access the Web site by using the URL http：//www.contoso.com. The solution must prevent the need to manually update DNS if the IP address of Server1 changes. Which type of resource record should you create in DNS？（）
- Aalias （CNAME）
- Bhost （A）
- Chost （AAAA）
- Dhost information （HINFO）