Which of the following is a correct entry in the /etc/hosts file?

A. localhost 127.0.0.1 localhost.localdomain

B. localhost.localdomain localhost 127.0.0.1

C. localhost localhost.localdomain 127.0.0.1

D. 127.0.0.1 localhost.localdomain localhost

E. localhost.localdomain 127.0.0.1 localhost