Case C-738/19: Judgment of the Court (Sixth Chamber) of 10 September 2020 (request for a preliminary ruling from the Rechtbank Amsterdam — Netherlands) — A v B, C (Reference for a preliminary ruling — Consumer protection — Directive 93/13/EEC — Annex, point 1(e) — Unfair terms in consumer contracts — Social housing — Obligation of residence and prohibition on subletting the property — Article 3(1) and (3) — Article 4(1) — Assessment of whether penalty clauses are unfair — Criteria)