In a Research Study,physiologists Monitored the Metabolite Concentrations Generated During

In a research study,physiologists monitored the metabolite concentrations generated during exercise in three groups of participants (people with poor fitness,average fitness,and exceptional fitness) .Which statement best summarizes this study's findings?

A) Exercise was beneficial to all three groups, but those benefits ended immediately after the exercise stopped; to have significant benefits, exercise must be done for a longer period of time.
B) The least fit participants had extremely low metabolic responsiveness; therefore, people with poor fitness are unlikely to experience benefits from exercise for at least 30 days after starting an exercise program.
C) In all three groups, exercise produced an almost immediate positive metabolic effect in which the strength of the effect was proportional to the participants' fitness levels.
D) Metabolites extracted from the blood of the least fit participants suppressed the metabolism level of cells growing in a tissue culture.