Which Statement Concerning Powers Granted the President of the United

Which statement concerning powers granted the President of the United States by the Taft-Hartley Act is true?

A) The President can obtain an injunction that will stop a strike, if the strike involves government workers only.
B) The President can require management to negotiate with a union and if the firm's management refuses, the President can appoint an arbitrator to resolve the conflict.
C) The President can obtain an injunction that will stop a strike for an eighty-day "cooling off" period if the strike is expected to imperil national safety or health.
D) The President can obtain an injunction that will stop a strike indefinitely.