Barney Is a Full-Time Graduate Student at State University

Barney is a full-time graduate student at State University. He serves as a teaching assistant for which he is paid $700 per month for 9 months and his $5,000 tuition is waived. The university waives tuition for all of its employees. In addition, he receives a $1,500 research grant to pursue his own research and studies. Barney's gross income from the above is:

A) $0.
B) $6,300.
C) $11,300.
D) $12,800.
E) None of these.