$($The answers to this problem are below the specific individual problems, please make sure your answers match there's before submitting, and show me how to get that answer in order so can do a problem similar, thank you!$)$ The gross requirements for Items A and H are specified for the beginning of weeks $1$ through $8$ in the tables that follows. The product structure for the item is given in the figure: The lead time of each item is specified within square brackets. For example, the lead time for Item A is $1$ week. Each part requires one unit of constituent parts. For example, one unit of H requires one unit each of J$,$ K$,$ and C$.$

Product Structure for Item A

Item A

Week $1$ Week $2$ Week $3$ Week $4$ Week $5$ Week $6$ Week $7$ Week $8$

Gross Requirement $00004055500$

Item H

Week $1$ Week $2$ Week $3$ Week $4$ Week $5$ Week $6$ Week $7$ Week $8$

Gross Requirement $00004508025$

There is no beginning inventory and there are no scheduled receipts.

Determine the planned order releases in for Item C$.$

$($First$,$ compute the net requirements and planned order releases for Items A and H$.$ Then determine the gross requirements for the Item C followed by computing its net requirements and planned order releases.$)$

What is planned order release for Item C in Week $3?$

$($The answer is $135,$ how did they get that$)$ Specify the number of units.

What is planned order release for Item C in Week $4?$

$($The answer is $75,$ how did they get that$)$ Specify the number of units.