以下调用宏定义的方法哪个是正确的？

A.constuserUrl=require(‘../../config.js’).userUrl

B.userUrl=require(‘../../config.js’).userUrl

C.constuserUrl=(‘../../config.js’).userUrl

D.constuserUrl=require(‘../../config.js’)

正确答案：constuserUrl=require(‘../../config.js’).userUrl