The X-Ray Diffraction Photography of Rosalind Franklin and Maurice Wilkins

The X-ray diffraction photography of Rosalind Franklin and Maurice Wilkins was critical to showing that

A) DNA has a double-helix structure.
B) the bases of DNA were held together by hydrogen bonds.
C) DNA has equal numbers of purines and pyrimidines.
D) DNA has deoxyribose sugar rather than ribose sugar.
E) the four bases of DNA are adenine, guanine, cytosine, and thymine.