Given the task definition and input, reply with output. 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: How many years passed between the two times that the Junior Grand Prix gold medalist won her awards? Passage:Mitchell currently works as a coach with former Swedish national champion Peter Johansson at the Skating Club of Boston. Their students include 2012 Skate America Silver Medalist Christina Gao, 2007 World Junior champion Stephen Carriere, 2008 Eastern Sectional champion Katrina Hacker, 2007 US National junior pewter medalist Curran Oi, 2007 Eastern Sectional champion Kylie Gleason, two time Junior Grand Prix gold medalist Juliana Cannarozzo, 2008 US National junior bronze medalist Brittney Rizo, 2007 Canadian Junior Champion Dana Zhalko-Tytarenko, and 2009 US National Junior Champion Ross Miner. They formerly coached 2003 U.S. pewter medalist Scott Smith, 2007 US National silver medalist Emily Hughes, 2004 US National Junior silver medalist Jason Wong, 2003 US National Novice bronze medalist Jessica Houston, and 2003 US National Junior Champion Erica Archambault.
Links: a. Juliana Cannarozzo b. Jessica Houston c. Ross Miner d. Christina Gao
a