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

$\backslash$table$[[,$Item A$,],[,$Week $1,$Week $2,$Week $3,$Week $4,$Week $5,$Week $6,$Week $7,$Week $8],[$Gross Requirement,$0,0,0,0,40,55,45,0]]$

$\backslash$table$[[,$Item H$,],[,$Week $1,$Week $2,$Week $3,$Week $4,$Week $5,$Week $6,$Week $7,$Week $8],[$Gross Requirement,$0,0,0,0,40,0,70,60]]$

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

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

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

$q,$ Specify the number of units.

What is planned order release for Item C in Week $4?$ Specify the number of units.