Former Indian cricketer Surinder Khanna on Sunday said that opening batsman Rohit Sharma answered his critics in the best possible manner by scoring centuries in both innings of the first Test match against South Africa.His remarks came after the conclusion of the first Test match as India recorded a comprehensive 203-run win over South Africa at Visakhapatnam.Rohit was exceptional in the match as he scored 176 in the first innings and then he went on to score 126 in the second innings. With this, he became only the second Indian opener to score centuries in both innings of a Test match."Rohit was opening for the first time. He scored centuries in both the innings and became only the second Indian to achieve this feat. There were questions over his spot as an opener but he answered his critics in the best possible manner," Khanna told ANI.In the first innings, India scored 502 runs and in response, South Africa came up with a spirited performance, as they registered 431 runs on the ...