This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Medicine
Which drug given for painful tingling of diabetic neuropathy? 
Select and explain. 
A. Gabapentin, B. Duloxetine, C. Pregablin, D. All of them
D: All of them
Answer: D: All of them 
Explanation: ANSWER: (D) All of themREF: Harrison's 17th ed chapter -338Chronic, painful diabetic neuropathy is difficult to treat but may respond to;Antidepressants (tricyclic antidepressants such as amitriptyline, desipramine, nortriptyline, imipramine)Selective serotonin norepinephrine reuptake inhibitors such as duloxetineAnticonvulsants (gabapentin, pregabalin, carbamazepine, lamotrigine)