c$.$ Corbin, age $15$ and single, is a dependent of his parents. Corbin has wages of $$1,800$ and interest of $$425.$

A$.$ Corbin need not file because his gross income of $$2,225$ is less than the threshold of $$5,050.$

B$.$ Corbin need not file because his gross income of $$2,225$ is less than the standard deduction of $$14,600.$

C$.$ Corbin must file, as his gross income of $$2,225$ exceeds his standard deduction of $$1,300.$

D$.$ Corbin must file, as his gross income of $$2,225$ exceeds his standard deduction of $$2,200.$