Greg and Jan are married and file a joint tax return. They have two children: Ben and Kelly. Ben, age 20, was a full-time student during the current year and had scholarships of \($12,000.\) Greg and Jan provided \($8,000\) to Ben for the rest of his support. Kelly, age 16, is in high school and has a part-time job at the mall, where she made \($2,200\) this year. Greg and Jan provided \($6,000\) for her remaining support. How many dependents may Greg and Jan claim on their tax return?