Roger Federer won his 7th Wimbledon title in 2012. When did he win his 6th Wimbledon title?

Roger Federer won his 6th Wimbledon title in 2009.

Here is a brief explanation of each option:

• Option A: 2008. This is incorrect because Federer won his 5th Wimbledon title in 2008.
• Option B: 2009. This is the correct answer because Federer won his 6th Wimbledon title in 2009.
• Option C: 2010. This is incorrect because Federer won his 7th Wimbledon title in 2010.
• Option D: 2011. This is incorrect because Federer did not win a Wimbledon title in 2011.