Which of These Is a Reason for the Increasing Union

Which of these is a reason for the increasing union organization in public institutions?

A) Public institutions are not free to intimidate their workers in the same ways private sector employers fight union organizing.
B) Public institutions prefer for their workers to be organized so workers' concerns can be addressed efficiently.
C) Organizing in the public sector does not have an effect on working conditions because elected officials manage the budgets of public institutions.
D) Workers in public institutions are particularly supportive of the social justice themes of unions and eager to organize.
E) None of the above-union organizing is not increasing in public institutions.