A firm has redesigned its production process so that it now takes $9$ hours for a unit to be made. Using the old process, it took $13$ hours to make a unit. If the process makes two unit each hour on average and each unit is worth $$1,500.$ Applying the Little's Law, what is the reduction in work$-$in$-$process $($inventory$)$ value?

Group of answer choices

$$12,000$

$$27,000$

$$39,000$

$$46,000$