Five jobs are waiting to be processed. Their processing times and due dates are given below. Job Processing Time $($days$)$ Job due date $($days$)$ A$47$ B $74811$ D $58$ E $35$ What is the average flow time by using earliest due date dispatching rule $?13\mathrm{.}9$ days $12\mathrm{.}6$ days $14\mathrm{.}5$ days $13\mathrm{.}6$ days $15\mathrm{.}4$ days