题目

The insanely popular song ‘Gangnam Style’ from South Korean recording artist PSY has just become the most watched video on YouTube ever, garnering more than 808 million views on the popular media site. The distinction was previously held by another pop heavyweight, Justin Bieber, whose song ‘Baby’ had a little more than 804 million views at press time. PSY made the announcement on his Twitter page earlier today. Since its release, the song has defeated such other popular videos as Jennifer Lopez’s ‘On the Floor,’ Eminem's ‘Love the Way You Lie’ and LMFAO’s ‘Party .  He wanted to know what I thought, _____ confused me because I thought the author knew     more than I did.      A. when       B. that                C. which               D. where