In a Certain Town, 22% of Voters Favor a Given $3.6$

Multiple Choice

In a certain town, 22% of voters favor a given ballot measure. For groups of 21 voters, find the variance for the number who favor the measure.

A) $3.6$ voters $^ { 2 }$
B) $4.6$ voters $^ { 2 }$
C) $1.9$ voters $^ { 2 }$
D) 13 voters $^ { 2 }$