79On the other hand, the Court has ruled that the directive merely provides, in Article 5(1) thereof, that unfair commercial practices ‘shall be prohibited’ and that, accordingly, it leaves the Member States a margin of discretion as to the choice of national measures intended, in accordance with Articles 11 and 13 of that directive, to combat those practices, on condition that they are adequate and effective and that the penalties thus laid down are effective, proportionate and dissuasive (judgment of 19 September 2018, Bankia, C‑109/17, EU:C:2018:735, paragraph 31 and the case-law cited).
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