An end item$"$A$"$ is assembled from two$"$B$"$ components and two$"$C$"$ subassemblies. The$"$C$"$ subassembly is composed of one of each component$"$B$"$ and$"$D$."$ If the gross requirement for$"$A$"$ is $100$ units, what is the demand for component$"$B$"?$

Part $2$

A$.$

$300$

B$.$

$400$

C$.$

$100$

D$.$

$200$