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.

Example Input: Question: How many teams played in the Malaysia Premier League the year Ferns made his debut for Felda United? Passage:Ferns made his debut for Felda United F.C. in the Malaysia Super League with a 2-1 win against Pahang FA in July 2017. Under the guidance of head coach B. Sathianathan, Ferns made a successful contribution, helping the team reach 3rd place in the Malaysia Super League and semi-final of the Malaysia Cup. Unfortunately, in the off-season of 2017 the club was notified it was being relegated to the Malaysia Premier League for the 2018 season after failing the Football Association of Malaysia club licence financial audit. Despite this setback, Ferns and the majority of the squad stayed at the club to help Felda United F.C win the title and secure promotion back to the Malaysia Super League for 2019. 
 Links: a. FELDA United F.C. b. 2018 Felda United F.C. season c. 2018 Malaysia Premier League d. 2018 Malaysia Premier League
Example Output: c

Example Input: Question: How long did the war that Potter fought in as an officer in the Royal Field Artillery last? Passage:Potter was born in Bedford to Reverend Brignal Peel, a Wesleyan minister, and Elizabeth Stimson. He was educated at Bedford Modern School and for a time at Worcester College, Oxford. He first performed in E. M. Royle's The White Man at the Lyric Theatre in London before touring. In 1915 he was George Robey's understudy at the Alhambra. During the Great War Potter served as a 2nd lieutenant in the Royal Field Artillery in France. He served in the 6th Division 2nd Brigade 21st Battery, from 8 February 1917 before returning to music hall once the war was over. Potter cultivated an individual style and persona, wearing a straw boater, wide grey flannel trousers (he said he invented the Oxford bags style at the Coliseum in 1920), an 'Old Borstolian' blazer and carrying a notebook with a rolled umbrella. James Agate described him as "that sham Harrovian who bears upon his blazer the broad arrows of a blameful life".
 Links: a. Harrow School b. World War I c. Lyric Theatre, London d. World War I
Example Output: b

Example Input: Question: How many teams were in Macedonian First League? Passage:He was born in Ohrid. After playing in the youth teams of FK Partizan, he begin his senior career playing with another Serbian club FK Dinamo Vranje. In 2007, he returned to Macedonia and signed with Macedonian First League club FK Pobeda where he stayed two seasons. In summer 2009 he moved to FK Olimpik Sarajevo playing in the Premier League of Bosnia and Herzegovina, but next winter he moved to Slovenia, to NK Krško. Since January 2011 he will play with FK Metalurg Skopje in the Macedonian First League. In summer 2011 he moved to Albania, where he represented two clubs during the 2011–12 Albanian Superliga season, KS Pogradeci and Shkumbini Peqin. In summer 2012 he moved to Greece and joined Football League side Anagennisi Epanomi F.C.. He play now in 3 Swiss league for Old Boys.
 Links: a. FK Dinamo Vranje b. FK Metalurg Skopje c. FK Olimpik d. Macedonian First Football League
Example Output:
d