The following process creates $10,000$ good units per year

The scrap rate of Process C is $\backslash (20\backslash \%\backslash ).$ Process B has a scrap rate of $\backslash (10\backslash \%\backslash ).$ To ensure that the raw material input to the system at Process $\backslash ($ A $\backslash )$ is limited to $18,519$ or less, the maximum allowable scrap rate for Process $\backslash ($ A $\backslash )$ is most nearly:

A$.\backslash (10\backslash \%\backslash )$

B $\backslash (20\backslash \%\backslash )$

C$.\backslash (25\backslash \%\backslash )$

D$.\backslash (75\backslash \%\backslash )$