The correct answer is (d).
The book, ‘The Proudest Day’ was authored by Anthony Read and David Fisher. It was first published in 1986. The book is about the events leading up to and including the D-Day landings on June 6, 1944.
Alok Bhalla is an Indian author who has written several books on Indian history. Durga Das was an Indian journalist and author who wrote several books on Indian history and politics. Chandra Kumar and Mohinder Puri are Indian journalists
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