Which of the following biological treatments has been successful in dealing with posttraumatic stress disorder (PTSD) symptoms such as nightmares, irritability, and sleep problems?

A) Monoamine oxidase inhibitors (MAOIs) and selective serotonin reuptake inhibitors (SSRIs)
B) selective serotonin reuptake inhibitors (SSRIs) and benzodiazepines
C) Benzodiazepines and tricyclics
D) Tricyclics and barbiturates