奶奶告诉小明：``$$2006$$年共有$$53$$个星期日''．聪敏的小明立到告诉奶奶：$$2007$$年的元旦一定是．  Grandma said: "there are $53$ Sundays in $2006$."~So the first day of $2007$ is~\uline{~~~~~~~~~~}~. 
选项为:A:Monday  B:Tuesday  C:Saturday  D:Sunday  请回答其中一个选项.