Given the task definition, example input & output, solve the new input case.
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: Question: When did the operation during which the 704th dropped supplies to allied troops near Nijmegen begin? Passage: The group was occasionally diverted from strategic missions to carry out air support and interdiction missions. It supported Operation Overlord, the invasion of Normandy by attacking transportation targets, including bridges, along with airfields and strong points in France. On D Day, the squadron and the rest of the 446th Group led the first heavy bomber mission of the day. The 446th aided ground forces at Caen and Saint-Loduring July by hitting bridges, gun batteries, and enemy troops. During Operation Market Garden, the attempt to seize a bridgehead across the Rhine in the Netherlands, the 704th dropped supplies to allied troops near Nijmegen. It struck lines of communications during the Battle of the Bulge. During Operation Varsity in March 1945, it supplied ground and airborne troops near Wesel. The squadron flew its last combat mission on 25 April 1945 against Salzburg, Austria. The group had flown 273 missions and had lost 58 aircraft during the war,
. Links: a. Allies of World War II b. Wesel c. Operation Market Garden d. Air Support.
Output: c
The passage describes the 704th's actions during Operation Market Garden.

New input case for you: Question: In what country was Riessiger the pupil of Peter von Winter? Passage:Reiiger attended the Thomasschule zu Leipzig and was the pupil of Johann Gottfried Schicht and Peter von Winter. In 1821, he followed the example of the young Beethoven and went to Vienna to study with Antonio Salieri and also studied theology at the University of Leipzig. Reiiger continued his musical studies in France and Italy in 1824, under the sponsorship of the Prussian Ministry of Cultural Affairs. After working for two years as the musical director of the Dresden Opera, he succeeded Carl Maria von Weber as the Kapellmeister of the Dresden Court in 1828, and would hold this office until his death in 1859. A famous piece known as Weber's Last Waltz was actually written by Reiiger (one of his opus 26 Danses brillantes) and is mentioned in Edgar Allan Poe's The Fall of the House of Usher (1839) as one of Roderick Usher's favorite pieces of music; it is also the title of a 1912 film.
Links: a. Edgar Allan Poe b. Kingdom of Prussia c. St. Thomas School, Leipzig d. Peter Winter
Output:
c