What Did the Leaders of the Prague Spring Hope to Accomplish

What did the leaders of the Prague Spring hope to accomplish in Czechoslovakia?

A) To establish nationwide, multiparty electoral politics in support of free markets and individual liberties
B) To reconcile socialism with internal party democracy, in which local decision by trade unions, managers, and consumers would replace rigid bureaucratic planning
C) To overthrow Soviet domination and join NATO
D) To overturn the recent liberal reforms that had challenged the position of the Communist Party and to restore centralized planning and economic controls