All possible 120 permutations of WDSMC are arranged in dictionary order, as if each were an ordi...

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All possible 120 permutations of WDSMC are arranged in dictionary order, as if each were an ordinary five-letter word. The last letter of the \( 86^{\text {th }} \) word in the list, is
(a) \( W \)
(b) \( D \)
(c) \( M \)
(d) \( C \)
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