Given the following information, develop a material requirements plan $($MRP$)$ for end item A and its components. $50$ and $80$ units of $\backslash ($ A $\backslash )$ are needed at the beginning of week $6$ and $8,$ respectively.

$1.$ The planned$-$order release for product $\backslash ($ A $\backslash )$ is:

$2.$ The planned$-$order release for product B is:

$3.$ The planned$-$order release for product C is:

$4.$ The planned$-$order release for product $\backslash ($ D $\backslash )$ is:

$5.$ The planned$-$order release for product E is: