Which of the following is are true about Mauryan architecture 1 Mauryans introduced stone mans...........

 Which of the following is/are true about Mauryan architecture?

1. Mauryans introduced stone mansonry on a wide scale.

2. Barabar caves in Gaya is the earliest example of caves hewed by Mauryan artisans for monks.

3. Polished pillars of Mauryan empire was made of single piece of sandstone.

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