The first alternative is correct (A).
When an amendment is approved, it becomes part of the Constitution. In this way, the issue becomes a guaranty constitutionally guaranteed.
Therefore, having legislation ratified by the Constitution is positive because it signals the long-term maintenance of the benefit, since to change the Constitution requires a great unity of the Congress. To date, the American Constitution has only had 27 amendments, with the top 10 making up the Bill of Rights.