How Did the Taliban Government Fall

How did the Taliban government fall?

A) They were a ruthless dictatorship that went too far against their own citizenship, who rioted and formed rebel groups to bring the government down.
B) The Taliban were never seen as very religious and were something of a foreign entity, making it difficult for them to acquire local support.
C) It was discovered that the leaders at the top of the government were corrupted and the only thing they really believed in was money.
D) The United States demanded Osama Bin Laden from them, and when they refused, the United States supported an anti-Taliban group and invaded Afghanistan.