Identify a Requirement That Must Be Met by a State

Identify a requirement that must be met by a state in drawing congressional district boundaries.

A) A person's vote in the largest district of a state must have only half the value of a person's vote in the smallest district. 
B) Districts in a given state must be geographically compact. 
C) Larger districts in a state must have more number of voters than smaller districts. 
D) Districts in a given state must not have contiguous boundaries. 
E) The task of redistricting must always be handled by independent commissions instead of state legislatures.