Who was the Provisional President of the Constituent Assembly before Dr. Rajendra Prasad took over?

Who was the Provisional President of the Constituent Assembly before Dr. Rajendra Prasad took over?
(a). C. Rajagopalachari  (b). Dr. B.R. Ambedkar  (c). T.T. Krishnamachari  (d). Dr. Sachchidananda Sinha Explanation: Dr. Sachchidananda Sinha served as the provisional or temporary President of the Constituent Assembly before Dr. Rajendra Prasad was elected as the permanent president.  His position and the context: Provisional President: He was chosen as the temporary President of the Constituent Assembly on December 9, 1946, during its first meeting. Reason for Temporary Role: Since the Assembly was new, a formal election for a permanent president hadn't been conducted yet. Dr. Sinha, being the eldest member of the Assembly, was chosen to preside over the initial proceedings following a common practice in parliamentary systems. Short Tenure: His role as the Provisional President lasted only two days. On December 11, 1946, Dr. Rajendra Prasad was formally elected as the permanent President. Why other options are incorrect: C. Rajagopalachari: While a prominent figure in Indian independence,…