The correct option is A Britain
Germany was fighting it's war in Africa too, and one of it's colonies in Africa was German East Africa(GEA), other colonies were defeated during the war, they were German South West Africa, Kamerun(now Cameroon) and Togoland, GEA which was led by Colonel Paul von Lettow-Vorbeck, fought throughout the war, for 4 years and later when they got to know of the armistice, they surrendered to British on 25 Novemeber ,1918.