Given the product structure tree and the inventory on$-$hand shown in the figure and table, determine the net requirement for $\backslash (\backslash$mathrm$\{$A$\},\backslash$mathrm$\{$B$\},\backslash$mathrm$\{$C$\},\backslash$mathrm$\{$D$\}\backslash ),$ and E $.$ Given the product structure tree and the inventory on$-$hand shown in the figure and table, determine the net requirement for C and E to produce $50$ units of finished goods$($X$).$ Show all processes for the solution.

What is the net requirement for E $?$

None of the above

$150$

$75$

$500$

$250$