Val wants to change the permissions on a file to remove access for all user that are not in the file’s group. She also wants the group permissions to allow the file to have read and write access. Val can currently read and write the file. Which octal mode with the chmod command will set those permissions?
A. chmod 664 ./data
B. chmod 660 ./data
C. chmod 775 ./data
D. chmod 550 ./data
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