Which of the Following Commands Will Change All CR-LF Pairs

Multiple Choice

Which of the following commands will change all CR-LF pairs in an imported text file, userlist.txt , to Linux standard LF characters and store it as newlist.txt ?

A) tr '\r\n' '' < userlist.txt > newlist.txt
B) tr -c '\n\r' '' < newlist.txt > userlist.txt
C) tr -d '\r' < userlist.txt > newlist.txt
D) tr '\r' '\n' userlist.txt newlist.txt
E) tr -s '^M' '^J' userlist.txt newlist.txt