Each of the following statements about chemoorganotrophs is true EXCEPT Select one: O a. they may use photophosphorylation to produce ATP O b: they generally rely on the metabolic activities of photosynthetic organisms O c. they may use substrate-level phosphorylation to produce ATP O d. they obtain energy by degrading organic compounds O e they may use oxidative phosphorylation to produce ATP O f. All of the options are true statements O g. None of the options are true statements