Henry David Thoreau Felt That War Was Unjust and Therefore

Multiple Choice

Henry David Thoreau felt that war was unjust and therefore refused to pay his taxes when the United States declared war on Mexico.
-Henry David Thoreau's neighbor agreed that war was unjust but paid his taxes because the law required him to pay the tax,the neighbor would be applying the jurisprudential theory of:

A) Legal Positivism.
B) Natural Law.
C) Legal Realism.
D) Common Law.