ActivityOptimistic Time $($a$)$Most LikelyTime $($m$)$PessimisticTime $($b$)$Expected DurationA $-$ Review Design$18243024$B $-$ Assemble Item$14212821$C $-$ Inspect Item$4686$D $-$ Package Item$61014?$ Figure $7-5$ Duration EstimatesConsider the activity duration estimates presented in Figure $7-5.$ Based on the information provided and adopting the PERT conventions to calculate expected activity durations, what is the expected duration of Activity D $-$ "Package Item"?Question $37$ Select one:a$\mathrm{.}9$ daysb$\mathrm{.}9\mathrm{.}5$ daysc$\mathrm{.}10$ daysd$\mathrm{.}12$ days