Jake,a Survivor of the Devastation Imposed by Hurricane Harvey When

Jake,a survivor of the devastation imposed by hurricane Harvey when it hit Rockport,Texas,witnessed his friends being severely injured or killed when the hurricane struck.He is now suffering from PTSD.Jake was not much of a drinker before the hurricane devastated his home and took his friends' lives,but now,he frequently drinks alone at night.To what might this be related?

A) Excessive levels of naturally occurring benzodiazepine activity in the frontal cortex
B) Lower levels of naturally occurring benzodiazepine activity in the frontal cortex
C) Excessive levels of naturally occurring benzodiazepine activity in the hippocampus
D) Lower levels of naturally occurring benzodiazepine activity in the hippocampus