What Does the "Size Principle" Refer To

What does the "size principle" refer to?

A) the underlying logic of representing all states equally in the Senate but not in the House
B) a natural limit on majority tyranny where a large, diverse public would be more divided than unified
C) the unified interests of a small group of self-interested citizens
D) the unified interests of a large group of self-interested citizens
E) achieving the largest majority possible in an election outcome