Read the following case study and answer the questions that follow:

Case study: Cool drink manufacturer

Peter works for a cool drink manufacturer. He is the production supervisor for one of the manufacturers production lines. Peter has been told that he needs to make $250$ litres of green cool drink this week.

$9\mathrm{.}1$ What information will Peter use in creating his schedule.

$9\mathrm{.}2$ What will happen if Peter does not create a effective production schedule.

$9\mathrm{.}3$ Name the four criteria that Peter's scheduling must ensure.