Rokat Corporation is a manufacturer of tables sold to schools, restaurants, hotels, and other institutions. The table tops are manufactured by Rokat, but the table legs are purchased from an outside supplier. The Assembly Department takes a manufactured table top and attaches the four purchased table legs. It takes $20$ minutes of labor to assemble a table. The company follows a policy of producing enough tables to insure that $40\%$ of next month's sales are in the finished goods inventory. Rokat also purchases sufficient raw materials to insure that raw materials inventory is $60\%$ of the following month's scheduled production.

Rokat's sales budget in units for the next quarter is as flollows: $[[$July$,2,300],[$August$,2,500],[$September$,2,100]]$

The number of table legs to be purchased in July is:

a$)9,520$ legs.

b$)9,200$ legs.

c$)9,424$ legs.

d$)2,404$