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 goals did Ryan McGuffie have for Gretna? Passage:He began his career at Rangers, where he made 2 appearances. Walker made his senior league début in a 1–0 win over Motherwell at Fir Park, coming off the bench to replace Hamed Namouchi. Walker had a six-month loan spell at Clyde in which he made his Bully Wee début in a 1–0 victory at Broadwood Stadium against Ross County. During this time, Walker won the SFL young player of the month award for September 2004. After his short-term deal at Broadwood, Walker went to Sweden for a couple of months but decided to come back home. he joined Morton in July 2005. Walker made his Morton début in a 3–2 (AET) Challenge Cup win over Gretna, in which assistant boss at Morton, Derek Collins, and later-to-be teammate Ryan McGuffie played for the opposition. His senior league debut was the following week against Raith Rovers, in which Morton triumphed 2–0 in front of 3,222 fans. He signed a new contract in May 2009, for another year at Morton. Being out of contract in the summer, and struggling for fitness, Walker was loaned to Brechin City for three months in January 2010. Walker suffered a recurrence of a groin injury, where he underwent surgery but remained at Brechin until April. He was released at the end of the 2009–10 season. After his release from Morton, Walker decided to go part-time and was signed up by ex-manager Jim McInally at East Stirlingshire for the 2010–11 season.
 Links: a. Jim McInally b. Derek Collins c. Ryan McGuffie d. Ross County F.C.
c

Question: When was Sale's first husband born? Passage:On June 21, 2012, Simpson married Canadian figure skater Jamie Salé, whom he had "known for years from the Edmonton skating scene". They had been paired as partners in late 2009 for the first season of the CBC show Battle of the Blades, which they won. Simpson and Salé have one daughter, Samantha Rae Simpson, born on July 7, 2013. Through this marriage, Simpson is also a stepfather to Salé's son Jesse Pelletier (born September 30, 2007), from her first marriage to skating partner David Pelletier. He also has three children from a previous marriage, including son Dillon, who was drafted by the Edmonton Oilers in the 4th round of the 2011 NHL Entry Draft and is currently a defenseman for the Bakersfield Condors.
 Links: a. Battle of the Blades b. David Pelletier c. Battle of the Blades (season 1) d. Stepfather
b

Question: How many years after Nathaniel Treat's descendant passed away did Nathaniel marry Mary Parker? Passage:Treat was born in Frankfort, Maine on December 29, 1798. He was a descendant of Robert Treat. In 1823, Treat married Mary P. Parker. They had ten children, including Joseph B. Treat, who became a member of the Wisconsin State Senate and chairman of the Republican State Central Committee. Treat built sawmills, served as a bank president, and became involved in the lumber industry. His former home in Orono, Maine, now known as the Nathaniel Treat House, is listed on the National Register of Historic Places. In 1870, Treat moved to Monroe, Wisconsin, where he died on February 4, 1894. His grandson, Charles Treat, became a major general in the United States Army. Treat and his family were Universalists.
 Links: a. Robert Treat b. Republican Party of Wisconsin c. Wisconsin State Senate d. Frankfort, Maine

a