Who among the following served as the Chief Election Commissioner of India for the longest period?ASukumar SenBK.V.K. SundaramCS. P. Sen VermaDNagendra SinghAnswer: B. K.V.K. Sundaram Read Explanation: Shri K.V.K. Sundaram was the second Chief Election Commissioner of India (20 December 1958 – 30 September 1967). General Elections to the 3rd and 4th Lok Sabha in 1962 and 1967 respectively were held during his tenure. Read more in App