Answer:
The correct answer is A. Although it began over the "Tariff of Abominations," the real issue in the debate over nullification was "states rights vs. federal authority".
Step-by-step explanation:
The issue over the Tariff of 1828 was if states could reject these measurements that were taken by the Federal Government or not. Under the states' interpretation, as the states were the original and founding entities of the United States, they had the right to nullify federal laws that were against their interests; while the Federal Government's interpretation defended the supremacy of the federal power over that of the states.