Which sentence from the article supports the main idea sentence, "The presidential elections in Iran in June of 2009 created one of the year's most important stories"?
A.
"Second, President Ahmadinejad's main rival was a moderate named Mir Hossein Mousavi."
B.
"This means the population was very engaged in the political process."
C.
"Mass protests and calls for a new election followed immediately after Ahmadinejad claimed victory."
D.
"Incumbent president Mahmoud Ahmadinejad claimed victory with over 65% of votes."