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 old was Arrigo Sacchi when Carbone moved to Milan? Passage:Carbone had a much travelled career, playing for ten different clubs. He began his youth career with Bari, making his professional debut with the club in Serie B during the 198889 season, earning promotion to Serie A. During his first season in Serie A, he broke into the starting line-up, making 26 appearances and scoring a goal against Inter at the San Siro stadium. In 1990, he moved to Milan at the request of manager Arrigo Sacchi. During his first season with the club, he made 21 appearances in Serie A, making his club debut on 9 September 1990, in a 10 home win over Genoa in Serie A. He also made his UEFA Champions League debut, scoring a goal against Club Bruges, and he started in Milan's European Supercup and Intercontinental Cup victories in 1990.
Links: a. Genoa C.F.C. b. Arrigo Sacchi c. A.C. Milan d. Genoa C.F.C.
Example Output: b

Example Input: Question: Which of the three emperors who Ji served lived longest? Passage:Jiang Ji (died 18 May 249), courtesy name Zitong, was an official and military general of the state of Cao Wei during the Three Kingdoms period of China. Born in the late Eastern Han dynasty, Jiang Ji started his career as a low-level official in his native Yang Province before becoming a subordinate of Cao Cao, the warlord who controlled the central government towards the end of the Eastern Han dynasty. After the end of the Eastern Han dynasty, he served in the state of Cao Wei through the reigns of the first three emperors Cao Pi, Cao Rui and Cao Fang and held various appointments in the military before rising to Grand Commandant, one of the top positions in the central government. During his service in Wei, he was known for being candid in giving advice to the emperor on various issues, including consolidating power, halting labour-intensive construction projects, and officials' abuses of power. In February 249, he joined the regent Sima Yi in staging a successful coup d'etat against his co-regent Cao Shuang, but died from illness a few months later.
Links: a. Cao Pi b. Cao Shuang c. Courtesy name d. Incident at the Gaoping Tombs
Example Output: a

Example Input: Question: Which Frente! EP released in the 1990s sold the most copies? Passage:Frente! (or Frente) are an Australian alternative rock and folk-pop group which originally formed in 1989. The original line-up consisted of Simon Austin on guitar and backing vocals, Angie Hart on lead vocals, Tim O'Connor on bass guitar (later replaced by Bill McDonald), and Mark Picton on drums (later replaced by Alastair Barden, then by Pete Luscombe). In August 1991 they issued their debut extended play, Whirled, which included the track, "Labour of Love". In March 1992 they released a second EP, Clunk, with its featured track, "Ordinary Angels", which peaked at No.3 on the ARIA Singles Chart. It was followed in October by "Kelly Street" (unintentional misprint of "Accidentally Kelly Street" was retained) which reached No.4. Their debut album, Marvin the Album, issued in November, peaked at No.5 on the ARIA Albums Chart. "Labour of Love" was released as an EP outside of Australasia in 1994 as a CD single with a cover version of New Order's "Bizarre Love Triangle" included. The Australian rock music historian Ian McFarlane felt that the group's "quirky, irreverent, acoustic-based sound was at odds with the usual guitar-heavy, grunge trends of the day. The band's presentation had a tweeness about it that could have been off-putting if not for its genuine freshness and honesty".
Links: a. Whirled (EP) b. Alternative rock c. Whirled (EP) d. Folk music
Example Output:
a