Instructions: 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: What century was this architecture popular? Passage:St. Raphael's is a high Gothic Revival structure, built of sandstone from Berea. Since construction in the 1890s, it has been one of Springfield's most distinctive buildings, due in large part to its two front towers — the bell tower is high, and the principal tower . By climbing 156 steps to the summit of the principal tower, one gains a panoramic view of the city and surrounding countryside. The building's general plan is that of a streamlined Latin cross, with slight gabled projections near the rear forming the crosspieces. Three entrances pierce the facade, while lancet windows of similar height are placed at varying locations in the towers, and two-story windows fill the side bays. Widest and tallest are the windows placed in the rear-side projections and above the entrances on the facade. Both towers are topped with pointed roofs, surrounded by ornamental pointed roofs of far smaller sizes, while the roof of the main part of the church is a steep gable. Despite extensive Gothic Revival detailing, such as the pointed-arch windows and doorways, the building also retains some elements of the Romanesque Revival style, including the false buttresses and columns around the main entrance, as well as the sheer massing of both towers. By the time that the building was complete, parishioners had spent $75,000 on construction and ancillary costs. The architect for St. Raphael's was Charles A. Cregar, first among architects native to Springfield. Cregar was responsible for numerous grand buildings in Springfield, including City Hall, and St. Raphael's is among the chief examples of his work.
 Links: a. Buttress b. Berea, Ohio c. Gothic Revival architecture d. Clark County Heritage Center
Output:
c