A Major Deficiency of the Norris-LaGuardia Act,which Was Corrected a Few

A major deficiency of the Norris-LaGuardia Act,which was corrected a few years later was:

A) The National Labor Relations Board was reorganized.
B) The inability to secure injunctions.
C) The inclusion of employer unfair labor practices.
D) The establishment of an independent administrative agency to enforce the act's provisions.
E) Union unfair labor practices were included.