Under what conditions will the activity of Glucose 6phosphat

Under what conditions will the activity of Glucose 6-phosphate dehydrogenase be inhibited?

a. The cellular concentration of NADPH is high

b. More than one of these choices

c. The cell is experiencing low oxidative stress

d. The cellular concentration of NADP+ is high

e. None of the choices listed

The activity of Glucose 6-phosphate dehydrogenase is inhibited when the cellular concentration of NADPH is high.