Question
Which of the following statements is a correct statement of the “law of diminishing returns”?
A. Every time you increase the thickness of the insulation, heat loss increases by a factor of two.
B. As you reduce the insulation level, heat loss decreases at a 1:2 ratio.
C. Every time you double your insulation, heat loss is only cut in half.
D. As you add more insulation, a wall's resistance to heat flow increases.