Answer:
The answer is C.
The Senate is made up of 2 senators from each state. The number doesn't change based on population or area.
In the House of Representatives, the number of representatives for each state is based on population. States with a larger population will have more representatives in the House of Representatives. (Also, the number of representatives for each state is not based on the area of the state.)
This bicameral legislature came from the "Great Compromise," where the Founding Fathers couldn't pick one system of representation over another, so they went with both.