Which of the Following Statements Best Describes the Critical Role

Which of the following statements best describes the critical role that ATP plays in cellular metabolism?

A) The covalent bond on the terminal phosphate of ATP is particularly strong,so it releases extra energy when hydrolyzed.
B) It is one of the four building nucleotides required for DNA synthesis.
C) ATP hydrolysis provides the energy used to power exergonic reactions in the cell.
D) ATP serves as an energy shuttle in the cell,coupling exergonic and endergonic reactions.