Which of the Following Statements Regarding the Unfair Labor Practice

Which of the following statements regarding the unfair labor practice cases handled by the National Labor Relations Board NLRB) is true?

A) The NLRB has no authority to initiate unfair labor practice cases on its own.
B) A regional director's failure to issue a complaint may be appealed to the general counsel,whose word can be further appealed.
C) After the complaint is issued,it is handled by an attorney from the Washington office.
D) The board acts on oral arguments,rarely on written briefs.
E) The board's orders are reviewable even if it is supported by substantial evidence on the record considered as a whole.