What Did the Supreme Court Rule in NLRB V

What did the Supreme Court rule in NLRB v. Noel Canning (2014) ?

A) Congress cannot block executive nominees for more than 90 days.
B) The president cannot make a recess appointment during a pro forma session in the Senate.
C) Executive branch officials cannot engage in campaign activities while on the government payroll.
D) Executive orders must follow a strict protocol or will be considered unconstitutional.