Some Buddhist rock-cut caves are called Chaityas, while the others are called Viharas. What is the difference between the two?

• A. Vihara is a place of worship, while Chaitya is the dwelling place of the monks
• B. Chaitya is a place of worship, while Vihara is the dwelling place of the monks
• C. Chaitya is the stupa at the far end if the cave, while Vihara is the hall axial to it
• D. There is no material difference between the two