Definition: In this task, you're given a question, a context passage, and four options which are terms from the passage. After reading a passage, you will get a brief understanding of the terms. Your job is to determine by searching and reading further information of which term you can answer the question. Indicate your choice as 'a', 'b', 'c', or 'd'. If you think more than one option is plausible, choose the more probable option to help you answer the question.
Input: Question: When did the war Edmund was involved in finally end? Passage:During the Second World War Hakewill-Smith initially served as Commanding Officer (CO) of the 5th Battalion, Devonshire Regiment, for several months from May 1940 and from September that year, as the CO of the 4th/5th Battalion, Royal Scots Fusiliers, as an acting lieutenant colonel. He was promoted to temporary brigadier on 30 March 1941, and commanded the 157th Infantry Brigade until late March 1942. He then became Director of Organization at the War Office before assuming command of the 155th Infantry Brigade in mid-February 1943. On 26 December 1943, promoted to temporary major general, he assumed command of the mountain warfare-trained 52nd (Lowland) Infantry Division from Major-General Neil Ritchie as its General Officer Commanding (GOC). He commanded the 52nd Division during the campaign in North-West Europe, from October 1944 until May 1945.
Links: a. Commanding officer b. World War II c. Brigadier (United Kingdom) d. 155th (South Scottish) Brigade
Output:
b