RBI Grade B Officers 2017 jun Paper

In this question a sentence is given with three words/ group of words in bold type. One or more of them may have a certain error. Below the sentence is given three combinations of words/group of words i.e. (A), (B) and (C). You have to find out the correct word/group of words from among (A), (B) and (C) given below each sentence to replace the incorrect words/group of words and make the sentence grammatically correct and meaningful. One, two, all three or none of them may be correct. Decide upon which is/are correct, if any, and select the option which decides you answer. If the sentence is correct as it is, select ‘No correction required’ as your answer. Much concentration of carbon dioxide in the ocean water is making it more acidic and that harms to creatures such as crabs and syllis, whose calcium carbonate shells impact as marine chemistry alters.
(A) A higher percentage of – will have- have impact
(B) More- harming- wounded
(C) Greater concentration oftends to harm-suffer