Explanation

After the Non-Cooperation Movement was suspended (1922), ‘pro-changers’ led by C.R. Das and Motilal Nehru favoured council entry, while Gandhi’s ‘no-changers’ opposed it. Vithalbhai Patel was a prominent Swarajist — elected to the Central Legislative Assembly in 1923 and its President in 1925 — so he did NOT belong to the no-changers. M.A. Ansari, C. Rajagopalachari and Kasturi Ranga Iyengar (a staunch Gandhian; the pro-changer ‘Iyengar’ was the different S. Srinivasa Iyengar) were no-changers. (Two third-party keys list D; the historical record supports B.)