How should a pilot terminate the read-back of an ATC clearance ?

Question

Question ATPL - Airline Transport Pilot license - VFR Communications

QuizVDS · Accepted Answer

With his own aircraft call sign

QuizVDS · Answer

With the word 'roger'

QuizVDS · Answer

With the ATC ground station call sign

QuizVDS · Answer

With the word 'wilco'

Id 37 - ATPL - How should a pilot terminate the read-back of an ATC clearance ?