1. The relevant supervisory authorities shall work in full consultation with each other when carrying out the assessment if the proposed acquirer is one of the following:

(a) a credit institution, insurance or reinsurance undertaking, investment firm or management company within the meaning of Article 2(1), point (b), of Directive 2009/65/EC (the UCITS management company) authorised in another Member State or in a sector other than that in which the acquisition is proposed;

(b) the parent undertaking of a credit institution, insurance or reinsurance undertaking, investment firm or UCITS management company authorised in another Member State or in a sector other than that in which the acquisition is proposed; or

(c) a natural or legal person controlling a credit institution, insurance or reinsurance undertaking, investment firm or UCITS management company authorised in another Member State or in a sector other than that in which the acquisition is proposed.