This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
After 50 gm of glucose is fed orally, there is 
Select and explain. 
A. Decreased ketone body production, B. Increased lactate production upon exercise, C. Decreased gluconeogenesis, D. All of these
D: All of these
Answer: D: All of these 
Explanation: The examiner is asking about the metabolic change in absorptive (fed) state.
In Absorptive (fed) state there is a decrease in gluconeogenesis.
Ketogenesis (ketone body production) is also reduced in the fed state.
Exercising muscles use glucose anaerobically and produce lactate.