Definition: 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: Who recorded the original version of the song that re-entered the chart at number one after a new version of it was sung at the CMA Awards? Passage:In the first issue of Billboard of the year, Craig Wayne Boyd entered the Hot Country Songs chart at number one with "My Baby's Got a Smile on Her Face". Boyd, winner of season 7 of NBC's reality TV singing competition The Voice, was only the second artist in the chart's 57-year history to enter at number one. After holding the top spot for a single week, however, the song achieved the unusual feat of dropping off the chart entirely the following week. In addition to Boyd, one other artist was a first-time chart-topper on Hot Country Songs. Following a critically acclaimed performance at the 49th Country Music Association (CMA) Awards, Chris Stapleton's version of "Tennessee Whiskey", which had spent a single week at number 46 six months earlier, re-entered at number one, despite never having been officially released as a single or serviced to radio. Nine acts gained their first career country number ones by topping the airplay listing. Ashley Monroe made her first appearance at number one under her own name when she featured on Blake Shelton's hit "Lonely Tonight", although she had previously reached the top spot as part of the group Pistol Annies, who had been featured on another of Shelton's songs two years earlier. Between May and August, Tyler Farr, Kelsea Ballerini, Canaan Smith, Michael Ray, and the band A Thousand Horses were all first-time chart-toppers, as was Grace Potter, who was featured on veteran country star Kenny Chesney's song "Wild Child". Later in the year, the band Old Dominion and the duo Dan + Shay made their first appearances at number one.
 Links: a. Tennessee Whiskey (song) b. Canaan Smith c. Blake Shelton d. 49th Annual Country Music Association Awards
Output:
a