Which of the Following Will Be Regarded as a Concerted

Which of the following will be regarded as a concerted practice within the meaning of Article 101 TFEU?

A) The conclusion of a franchising contract which has appreciable anti-competitive effect on competition within the internal market.
B) The adoption of a recommendation by a trade association stating that if any of its members fails to adopt target prices recommended by the association, such member will be expelled from the association. This being in circumstances where the expelled member will, as a consequence, be unable to sell its products within the national territory.
C) The participation of managing directors of competing undertakings in a meeting during which the intended pricing policy and other issues relating to the production and distribution of the relevant products are discussed.