In the following question, out of the four alternatives, select the alternative which will improve the underlined part of the sentence. In case no improvement is needed, select “No improvement”.But in the hectic rush of events, both the military and civilian authorities will fail to make effective use of the information they had collected.

• A. was failed in making effective use of
• B. failed to make effective use of
• C. fails to make effective use of
• D. no correction required