Which of the following best describes the chemical energy that is derived from the krebs cycle? energy is produced in the forms of:

a. atp, which directly supplies energy for many cellular processes, and nad+, which supplies energy for the electron transport chain.
b. nad+, which directly supplies energy for many cellular processes, and atp, which supplies energy for the electron transport chain.
c. atp, which directly supplies energy for many cellular processes, and nadh, which supplies energy for the electron transport chain.
d. nadh, which directly supplies energy for many cellular processes, and atp, which supplies energy for the electron transport chain.