Robert, who has no dependents is 36 years of age, and single. He earned $20,000 this year before he was fired for inadequate job performance. After that, Robert received $3,000 during the year in unemployment compensation. Before his firing, while lifting a filing cabinet, he injured his back, and received $5,000 in workers' compensation. How much should Robert include in his gross income? O $28,000 O $25,000 $23,000 O$20,000