Solve
-Chandra Has 5 Liters of A 56 $56 \%$ Solution of Sodium Hydroxide in a Container

Multiple Choice

Solve.
-Chandra has 5 liters of a $56 \%$ solution of sodium hydroxide in a container. What is the amount and concentration of sodium hydroxide solution she must add to this in order to end up with 7 liters of $46 \%$ solution?

A) 2 liters of $19 \%$ solution
B) 2 liters of $21 \%$ solution
C) 2 liters of $24 \%$ solution
D) 2 liters of $22 \%$ solution