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: Which group was organized the earliest, the 1st King's Dragoon Guards or the 2nd Dragoon Guards (Queen's Bays)? Passage:The 1st King's Dragoon Guards was a cavalry regiment in the British Army. The regiment was raised by Sir John Lanier in 1685 as the 2nd Queen's Regiment of Horse, named in honour of Queen Mary, consort of King James II. It was renamed the 2nd King's Own Regiment of Horse in 1714 in honour of George I. The regiment attained the title 1st King's Dragoon Guards in 1751. The regiment served as horse cavalry until 1937 when it was mechanised with light tanks. The regiment became part of the Royal Armoured Corps in 1939. After service in the First World War and the Second World War, the regiment amalgamated with the 2nd Dragoon Guards (Queen's Bays) in 1959 to form the 1st The Queen's Dragoon Guards.
 Links: a. British Army b. 1st The Queen's Dragoon Guards c. 2nd Dragoon Guards (Queen's Bays) d. British Army
c

Question: What other artists collaborated on the soundtrack DJ Quik worked on shortly before his friend Mausberg died? Passage:In 1998 Quik released Rhythm-al-ism his fourth studio album on Profile Records. This record was certified Gold in 1999, and contained the singles "Hand in Hand (featuring 2nd II None and El Debarge) and "You'z A Ganxta." It featured guest appearances by Nate Dogg, Snoop Dogg, AMG and Suga Free. That year he went on to produce for The Luniz, Shaquille O'Neal, Deborah Cox and Jermaine Dupri. He also produced on The Kingdom Come by rapper King Tee which ultimately never came out due to label problems. He also faced personal and professional tragedy when his nephew murdered his close friend and protégé Darryl Cortez Reed in 1998. In 1999, there was the release of Classic 220 by 2nd II None, in which Quik played a huge part. Production on Gap Band's Y2K: Funkin' Till 2000 Comz album, Snoop Dogg's No Limit Top Dogg,  and Deep Blue Sea (soundtrack). This was compounded by the death of another friend and rapper Mausberg, subsequently murdered in 2000. That year, saw the release of rapper Mausberg's album, and DJ Quik's Balance & Options. Also production with Whitney Houston, Erick Sermon, 8Ball & MJG, Xzibit and AMG.
 Links: a. Deep Blue Sea (soundtrack) b. Deborah Cox c. Xzibit d. Snoop Dogg
a

Question: How many copies of the duet produced by Gary Klein were sold? Passage:Having left Casablanca Records, with whom she had had some of the biggest selling and most popular hits of the disco era in the 1970s, Summer had signed to Geffen Records in 1980 and had continued working with Giorgio Moroder and Pete Bellotte, with whom she had written the vast majority of her hits. However, label owner David Geffen had been disappointed with the chart performance of the 1980 The Wanderer, Summer's debut album for Geffen and rather than release the followup; I'm a Rainbow which Summer had recorded with Moroder/Bellotte in 1981. Geffen had Summer record a new album with Quincy Jones from whom a production credit – given Jones' track record particularly his work with Michael Jackson – Geffen felt would guarantee a commercial smash. The resultant Donna Summer album was the first time the singer had worked with a producer other than Moroder and Bellotte since 1974 save for the one-off track "Down Deep Inside (Theme from "The Deep")" which was produced by John Barry for the film The Deep, and the "No More Tears (Enough is Enough)" duet with Barbra Streisand which was co-produced by Gary Klein of The Entertainment Company.
 Links: a. Giorgio Moroder b. No More Tears (Enough Is Enough) c. John Barry (composer) d. Michael Jackson

b