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Pinewood Academy's winter carnival is coming up, and Mr. Meyer is in charge of ordering the craft kits again. He knows he ordered $9$ boxes of snowman kits last year but can't remember how many kits come in a box. He checks the records and finds that the school used $168$ of the snowman kits last year and had $12$ left over after the event.$\newline$Which equation can Mr. Meyer use to find how many snowman kits, $k$, come in each box?$\newline$Choices:$\newline$(A) $9(k - 168) = 12$$\newline$(B) $9k - 168 = 12$$\newline$(C) $168(k - 9) = 12$$\newline$(D) $168k - 9 = 12$