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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Dinesh khalmaniya 1
correct order is C>A>D>B
reference https://books.google.co.in/books?id=RrKgfuRwsqsC&pg=PA142&dq=basicity+order+of+methoxy+aniline&hl=en&sa=X&ved=0ahUKEwisgqLhwJrrAhXHTX0KHWuMBTQQ6AEIPTAD#v=onepage&q=basicity%20order%20of%20methoxy%20aniline&f=false
I'm sending a screenshot of this book please check it.
this is absolutely correct order