Case C-608/19: Judgment of the Court (Eighth Chamber) of 28 October 2020 (request for a preliminary ruling from the Consiglio di Stato — Italy) — Istituto nazionale per l’assicurazione contro gli infortuni sul lavoro (INAIL) v Zennaro Giuseppe Legnami Sas di Zennaro Mauro & C. (Reference for a preliminary ruling — State aid — Regulation (EU) No 1407/2013 — Article 3 — De minimis aid — Article 6 — Monitoring — Undertakings exceeding the de minimis ceiling because of cumulation with aid obtained previously — Option of choosing between reduction and forgoing previous aid so as to comply with the de minimis ceiling)