Which statement best describes how Watson and Crick's model used other scientists' work to create a model of DNA? A. They used Chargaff's rule to determine that it contains ribose sugar.
B. They used Franklin's photo to determine that DNA was a double helix.
C. They used Levene's work to determine the number of base pairs in each strand.
D. They used Nirenberg and Matthei's studies to determine that DNA is made of nucleotides.