Which of the following is not the reason for the namelessness of Dao? A: Dao is at a level higher than the actual world which is namable with all things. B: Dao can not be spoken of and described in words since it is not in any linguistic system. C: Dao is beyond shapes and features. D: Nobody can understand Dao.

Which of the following statement is not the reason for the namelessness of Dao? A: Dao can not be spoken of and described in words since it is not in any linguistic system. B: Dao is at a higher level than the actual world which is namable with all things. C: Dao is beyond shapes and features. D: Nobody can understand Dao.