This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Metabolism of carbohydrate, Subject name: Biochemistry
Which of the following is a step in the gluconeogenic pathway? 
Select and explain. 
A. Pyruvate to Acetyl co A, B. Glucose 6 phosphate to fructose 6 phosphate, C. oxaloacetate to citrate, D. oxaloacetate to phosphoenol pyruvate
D: oxaloacetate to phosphoenol pyruvate
Answer: D: oxaloacetate to phosphoenol pyruvate 
Explanation: Pyruvate to acetyl co A is an anaerobic step in oxidation of glucose Glucose 6 phosphate to fructose 6 phosphate is a step in glycolysis oxaloacetate to citrate is a step in krebs cycle