Which of the Following Was the Result Before the U

Which of the following was the result before the U.S.Supreme Court in Free Enterprise Fund v.Public Company Accounting Oversight Board,the case in the text in which the plaintiffs brought various constitutional challenges involving the appointment and standards for removal of
Members of the Public Company Accounting Oversight Board?

A) That limitations on the removal of Board members contravened the Constitution's separation of powers and that the unconstitutional provisions were not severable from the remainder of the statute.
B) That limitations on the removal of Board members contravened the Constitution's separation of powers but that the unconstitutional provisions were severable from the remainder of the statute.
C) That limitations on the removal of Board members were constitutional.
D) That limitations on the removal of Board members were constitutional only so long as the executive branch failed to challenge the restrictions placed on the president.