At which session, under the Presidency of Jawaharlal Nehru, did Indian National Congress (INC) declare 'Poorna Swaraj' (complete independence) as its goal?

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At which session, under the Presidency of Jawaharlal Nehru, did Indian National Congress (INC) declare 'Poorna Swaraj' (complete independence) as its goal?
(A) Surat (1907)
(B) Belgaum (1924)
(C) Lahore (1929)
(D) Tripuri (1939)

Answer: (C) Lahore (1929)