An innovation of the eighteenth-century cookbook writer Mary Cole was that in her work she (i)____________ the earlier books from which her recipes were drawn. Even in those numerous instances in which she had collated into a single version, which she could have called her own, the recipes of several earlier writers, she (ii)____________ them. A. preserved B. took pains to cite C. enhanced D. sought to imitate E. acknowledged F. could not surpass