Problem: Sarah is a 24-year-old patient with generalized anxiety disorder. She is taking a benzodiazepine and has been complaining of sleepiness associated with taking the medication. Which GABA-A alpha subunit has been most associated with sedation properties of benzodiazepines? A. GABA-A receptors containing alpha-1 subunits B. GABA-A receptors containing alpha-2 subunits C. GABA-A receptors containing alpha-3 subunits D. GABA-A receptors containing alpha-4 subunits