What Demonstrates the Founders' Desire to Insulate the Senate from Popular

What demonstrates the Founders' desire to insulate the Senate from popular displeasure?

A) terms of two years,with all seats open for each election
B) terms of four years,with one-third of seats open for election every two years
C) terms of four years,with two-thirds of seats open for election every two years
D) terms of six years,with one-third of seats open for election every two years
E) terms of six years,with two-thirds of seats open for election every two years