Which of the following statements is NOT true about the debate over the nature of genetic material?

A)Many scientists believed that DNA was not the genetic material because,with only four types of nucleotides,DNA did not have enough variability to store information.
B)Scientists focused on carbohydrate and protein in their studies of possible genetic material since they knew that genes were on chromosomes and that chromosomes were made of carbohydrate and protein.
C)Many scientists thought that proteins had a greater capacity for storing information because proteins contain 20 amino acids that could be sequenced differently.
D)Some scientists thought that RNA was likely to be the genetic material.