How Did Herbert Spencer Apply Evolutionary Theory to Ethics

How did Herbert Spencer apply evolutionary theory to ethics?

A) Giving aid to poor people who fail in competition undermines the best qualities of the species.
B) If nature has no enduring order or design,then moral laws are unreliable too.
C) Since evolution is true,the Bible has no place in science or public education.
D) Those that rise to economic predominance are morally obligated to assist the weak.
E) Humans are animals,so individuals are justified in using violence to ensure their survival.