Mr. Smart was a candidate for a degree at a local university. He received a grant that provided the following: Tuition $1,600 Books and supplies 400 Payment for research services 1,200 Mr. Smart spent the entire $3,200 on tuition, books, and supplies. What amount must Mr. Smart include in his income? A. $1,200 B. $1,600 C. $2,800 D. $3,200