$q,30.$ Barney is a full$-$time graduate student at State University. He serves as a teaching assistant for which he is paid $$700$ per month for nine months and his $$5,000$ tuition is waived. The university waives tuition for all of its employees. In addition, Barney receives a $$1,500$ research grant to pursue his own research and studies. Barney's gross income from the above is:

a$.$ $$11,300.$

b$.$ $$6,300.$

c$.$ $$0.$

d$.$ $$12,800.$

e$.$ None of the above.