Whichofthefollowingcommandsmakes/bin/fooexecutablebyeveryonebutwritableonlybyitsowner?()

Whichofthefollowingcommandsmakes/bin/fooexecutablebyeveryonebutwritableonlybyitsowner？（）

A、chmod557/bin/foo

B、chmodo+rwx.a+rx/bin/foo

C、chown557/bin/foo

D、chmod755/bin/foo