Which series is correctly arranged in order of decreasing radius?

A. Al^3 + > Mg^2 + > Na^ + > F^-

B. F^ - > Na^ + > Mg^2 + > Al^3+

C. F^ - > Al^3 + > Mg^2 + > Na^+

D. Na^ + > Mg^2 + > Al^3 + > F^-

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