A. is not true because there are different amounts in all of the different species shown by the data.
B. Is true, same reason A is wrong
C. and D. - In a strand of DNA, adenine pairs with thymine (could also be uracil) and guanine pairs with cytosine, so it make sense that the levels of the two pairings would be similar across all of the organisms.
B.) The amounts of A, T, G and C in DNA varies from species to species and C.)In any ome species, the amount of adenine closely approximates that of thymineD.) In any one species, the amount of guanine closely approximates that of cytosine