For how long did Aurangzeb's army camp outside Golconda fort to capture it?

The Golconda fort, located in the present-day state of Telangana, in Hyderabad was the home of the Qutbshahi sultans till 1687. In 1687 it was captured by the Mughal Emperor Aurangzeb. But to capture the fort Aurangzeb's army had to camp outside it for eight long months. This is because it was a well-protected fort, with massive height, thick walls, a long ditch of water, etc. So the correct option is C.