Context: He took out a screwdriver and gave one of the buttons at the back of the central remote a half - twist . He sprayed lubricant on the coils . And , oh yeah , replaced the wall unit 's shattered panel ( Now THAT I could prove was broken . ) .

Question: Why did he spray lubricant on the coils ?
Options:
0. Because he took out a screwdriver .
1. None of the above choices .
2. Because one of the buttons at the back was given a half twist .
3. Because he replaced the wall unit 's shattered panel .
Answer: 1