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: Pharmacology
Which of the following antiepileptic agents acts on the GABAergic system to decrease the uptake of GABA into neurons and glial cells ? 
Select and explain. 
A. Vigabatrin, B. Progabide, C. Gabapentin, D. Tiagabine
D: Tiagabine
Answer: D: Tiagabine 
Explanation: None