Direction: The following question consists of a sentence which is divided into three parts, with grammatical error in one or more than one part of the sentence. If there is an error in any part of the sentence, find the correct alternatives to replace those parts from the three options given below, to make the sentence grammatically correct. If there is an error in any part of the sentence and none of the alternatives is correct to replace that part, then choose 'None of the A, B, and C' as your answer. If the given sentence is grammatically correct or does not require any correction, choose 'No correction required' as your answer.

This was a cataclysmic trauma for the Mundarath Tharavad,  (A) which overnight lost vast wealth and riches, (B) all that remained was 11th-century copper-plate inscriptions giving them title before their lands.  (C)

(A) This has been a cataclysmic trauma for the Mundarath Tharavad,

(B) which lost vast wealth and riches overnight,

(C) all that remained was 11th-century copper-plate inscriptions giving them title to their lands.