What is not written in the Basic Law of Germany?

EDITORIAL LEARNING AID

Why is this answer correct?

Article 1 contains human dignity, Article 3 equality before the law and Article 5 freedom of expression, so these sentences are in the Basic Law. It does not say that everyone should have the same amount of money, because equality before the law does not mean equal incomes.

Basic Law: equality before the law, not equal amounts of money.

This translation and explanation are editorial learning aids. The official German wording and answer key govern the examination.