单项选择题
阅读以下代码,执行fn(7)的返回值是()。var x =10;function fn(myNum){var x =11return x +myNum;}
A.18B.17C.10D.NaN
A.arguments.lengthB.theNumsC.paramsD.arguments
A.getTime()B.setTime()C.getFullYear()D.getMonth()