Which of the following commands makes /bin/foo executable by everyone but only writable by its owner?

Which of the following commands makes /bin/foo executable by everyone but only writable by its owner?

Which of the following commands makes /bin/foo executable by everyone but only writable by its owner?

A.
chmod 557 /bin/foo

B.
chmod o +rwx, a+rx /bin/foo

C.
chown 557 /bin/foo

D.
chmod 755 /bin/foo



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