A$1$ Sports sells athletic equipment. On November $14,$ they sold $$4000$ of uniforms to Middleboro Middle School, terms $\frac{2}{10},\frac{n}{30}.$ On November $21,$ they received an order from Bay High School for $$2400$ of custom printed bats to be produced in December. On November $30,$ Middleboro Middle School returned $$400$ of defective merchandise. A$1$ has received no payments from either school as of month$-$end. What amount will be reported as accounts receivable, net on the balance sheet as of November $30?$

$$6400$

$$6000$

$$4000$

$$3600$