Product $Z$ is made from $3$ units of $S1,1$ unit of $S2$ and $3$ units of $S3\mathrm{.}3$ units of $C1$

are needed for each $S1,$ as are $4$ units of $C3.$ S$2$ is comprised of $5$ units of $C2.$

One unit of $C3$ and two units of $C4$ are used for each unit of $S3.$

$1-$ Design a diagram for Product Z$\text{'}$s bills of materials

$2-$ Complete the $10-$week materials requirements plan.