You will be given a definition of a task first, then some input of the task.
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.

Question: Does the Sierra Juarez extend into any other states? Passage:The Sierra Juarez is a range of mountains in Oaxaca state, Mexico between latitudes 1720'-1750'N and longitudes 9615'-9700'W, with an area of about 1,700km (656 sq mi). It is part of the Sierra Madre de Oaxaca. The range is separated from the Sierra de Zongolica to the north by the Santo Domingo River, flowing through the Tecomavaca Canyon. It stretches south-eastward to the Cajones River and the Sierra de Villa Alta. The mountains are in the district of Ixtlan de Juarez in the Sierra Norte de Oaxaca region. The range is named after Mexico's only indigenous president, Benito Juarez, who was born here in 1806 in the small village of San Pablo Guelatao. The heavily wooded area is about from the city of Oaxaca on Federal highway 175, heading towards Tuxtepec.
Links: a. San Juan Bautista Tuxtepec b. Oaxaca c. Oaxaca d. Sierra Norte de Oaxaca
Output:
b