Does Article 258 TFEU Give the Commission Discretion as to Whether

Does Article 258 TFEU give the Commission discretion as to whether to bring proceedings against a Member State for an alleged breach of EU law before the ECJ?

A) The Commission has no discretion as Article 258 TFEU specifies what action it must take.
B) The Commission has a limited discretion in such circumstances.
C) The Commission has complete discretion as to whether to bring proceedings against the Member State before the ECJ.