Which of the following statements on the Amaravati Stupa and its relief sculpture is/are correct?

1. It was located in the lower Krishna valley.
2. In India, it was next only to the Sanchi Stupa in size.
3. The Amaravati school of sculpture made a lasting impact on the later South Indian sculpture, and its products were carried to Sri Lanka and South-east Asia.

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Which of the following pairs of the king and his dynasty in early historical Tamilakam is/are not correctly matched?

1. Senguttuvan : Chera
2. Udiyanjeral : Chola
3. Nedunjeliyan : Pandya

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Which of the following factors contributed to the formation of the Forward Bloc by Subhas Chandra Bose in 1939?

1. Bose failed to win the confidence of Mahatma Gandhi.
2. The Congress Left was disunited and failed to support Bose.
3. The Communists did not support Bose in his endeavours.
4. The supporters of M.N. Roy and socialist leaders like Jayaprakash Narayan preferred Congress unity to supporting Bose.

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