India lost 11.73 lakh man days
to strikes in 2017, and according to estimates made by the Labor Bureau, they cost the nation 550 crore rupees.
A. to strikes in 2017, and according to estimates made by the Labor Bureau, they cost the nation 550 crore rupees -- What is the reverent for ‘they? Strikes, man-days, or estimates? Wrong
B. to strikes in 2017, which according to estimates made by the Labor Bureau, cost the nation 550 crore rupees -- The correct choice.
C. in strikes in 2017, and according to estimates made by the Labor Bureau, it cost the nation cost the nation 550 crore rupees --- 1. referent for ‘it’? Wrong 2. anything wrong with the transcription?
D. in strikes in 2017, so as to cost the nation 550 crore rupees, according to estimates by the labor bureau --- 'so as to cost' is a wrong idiom.
E. to strikes in 2017, which according to estimates made by the Labor Bureau, thus costs the nation 550 crore rupees --- the plural subject, whether man-days or estimates or strikes does not have a plural verb
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