<prompt> Inverse agonist of GABA receptor isBenzodiazepinesFlumazenilβ- CarbolineNone of the above  <response>: β - Carboline is the inverse agonist.Benzodiazepines are full agonists that open chloride channels by acting on GABA receptors.Flumazenil is antagonist for Benzodiazepines given to treat toxicity. 