Given the following data, develop MRP plans for items C$,$ D$,$ E and F$.$

MPS start: The following table shows the MPS start information for end items A and B$.$

$\backslash$table$[[$End item,Week $1,$Week $2,$Week $3,$Week $4,$Week $5,$Week $6],[$A$,30,70,,,,80],[$B$,,,,60,,100]]$

Bill of materials:

End item A is made of $1$ unit of item C and $1$ unit of item D$.$

Item $D$ is made of $2$ units of item $E$ and $2$ units of item $F.$

End item B is made of $1$ unit of item $C$ and $2$ units of item F$.|$

MRP$-$related information for each item:

$\backslash$table$[[$Item$,\backslash$table$[[$Leadtime$],[($weeks$)]],$Lot sizing,$\backslash$table$[[$Safety stock$],[$requirement$]],\backslash$table$[[$Available on$-],[$hand$],[$inventory$]],\backslash$table$[[$Scheduled$],[$receipts$]]],[$C$,2,$L$4$L$,0,60,80$ in week $1],[$D$,1,$L$4$L$,0,80,$None$],[$E$,1,$FOQ $(50),0,60,$None$],[$F$,1,$FOQ $(60),10,50,60$ in week $1]]$

$\backslash$table$[[,,$Week $1,$Week $2,$Week $3,$Week $4,$Week $5,$Week $6],[,,,,,,,],[,,,,,,,],[6\_,$GR$,,,,,,],[,$SR$,,,,,,],[,$PAB,,,,,,$],[,$PR$,,,,,,],[,$POR,,,,,,$],[,,,,,,,],[$D$\_,,,,,,,],[$GR$,,,,,,],[$SR$,,,,,,],[$PAB$,,,,,,],[$PR$,,,,,,],[,$POR,,,,,,$]]$