In week 6, the Lions hosted the Los Angeles Rams. The score seesawed the entire game. The Lions scored first with a seven-yard touchdown pass from Matthew Stafford to Marvin Jones. The Rams tied it up with a 20-yard touchdown pass from Case Keenum to Kenny Britt, and took the lead in the second quarter with a one-yard touchdown run by Keenum. The Lions tied it back up with a two-yard touchdown catch by Andre Roberts on fourth down, and stopped the Rams from taking the lead with a goal line stand as time expired in the second quarter, keeping the score tied 14-14 at halftime. After the break, the Lions took the lead back with a four-yard touchdown catch by Anquan Boldin, but the Rams tied it back up with a 15-yard catch by Lance Kendricks. Los Angeles then retook the lead in the fourth quarter with a nine-yard catch from Britt, but Detroit tied it up again on a 23-yard TD catch by Golden Tate. The Lions took the lead for good with a 34-yard field goal by Matt Prater at the 1:29 mark of the final quarter. Detroit prevented the Rams from getting into range for a game-tying field goal when Rafael Bush intercepted a Keenum pass with just over a minute to play, giving the Lions a 31-28 win and improving their record to 3-3. Golden Tate tallied a career-high 165 yards on eight receptions. The Lions celebrated the 25th anniversary of their 1991 NFC Central Championship with an on-field reunion of its players at halftime.
Question: Who threw an interception to Rafael Bush?
Answer: Keenum