What Was the Central Question in CASE 3

Multiple Choice

What was the central question in CASE 3.1,Wal-Mart Stores,Inc.v.Dukes (2011) ?

A) Could Wal-Mart be properly sued in federal or in state court?
B) Could sufficient commonality among Wal-Mart employees be shown to certify the group as a class?
C) Could one Wal-Mart employee represent more than 1 million other employees?
D) Did the employees waive their rights to arbitration under the Federal Arbitration Act?