Bacteria and other microbes can be used to "clean up" an oil spill by breaking down oil into carbon dioxide and water. Two samples isolated from the Deepwater Horizon leak in the Gulf of Mexico were labeled A and B. The DNA of each was isolated and the percent thymine measured in each sample. Sample A contains 19.5 % thymine and sample B contains 27.7 % thymine. Assume the organisms contain normal double‑stranded DNA and predict the composition of the other bases.