In this task, you are given a context, a subject, a relation, and many options. Based on the context, from the options select the object entity that has the given relation with the subject. Answer with text (not indexes).

Context: Margaret of York ( 3 May 1446 -- 23 November 1503 ) -- also by marriage known as Margaret of Burgundy -- was Duchess of Burgundy as the third wife of Charles the Bold and acted as a protector of the Duchy after his death . She was a daughter of Richard Plantagenet , 3rd Duke of York , and Cecily Neville , and the sister of two Kings of England , Edward IV and Richard III. She was born at Fotheringhay Castle , Northamptonshire , England , and she died at Mechelen in the Low Countries ., Charles the Bold (, 10 November 1433  5 January 1477), baptised Charles Martin, was Duke of Burgundy from 1467 to 1477. He was the last Duke of Burgundy from the House of Valois and is sometimes also known as Charles the Rash., Duke of Burgundy was a title borne by the rulers of the Duchy of Burgundy, a small portion of traditional lands of Burgundians west of river Saône which in 843 was allotted to Charles the Bald's kingdom of West Franks. Under the Ancien Régime, the Duke of Burgundy was the premier lay peer of the kingdom of France., Subject: margaret of york, Relation: noble_title, Options: (A) duke (B) duke of burgundy
duke of burgundy