Given the project within the table below, calculate the following:

ActivityPredecessorTime $($days$)$A$--7\mathrm{.}5$B$--9\mathrm{.}5$C$--10\mathrm{.}5$DA$,$ C$8$ED$10$FB$,$ E$4$GF$9$HG$11\mathrm{.}5$

a$.$ What is the project length? $[$ Select $]["53\mathrm{.}0$ days", $"52\mathrm{.}5$ days", $"51\mathrm{.}0$ days", $"47\mathrm{.}5$ days", $"48\mathrm{.}5$ days"$]$

b$.$ What activities are on the critical path? $[$ Select $]["$C$,$ D$,$ E$,$ F$,$ G$,$ H$","$A$,$ B$,$ C$,$ D$,$ E$,$ F$,$ G H$","$A$,$ D$,$ E$,$ F$,$ G$,$ H$","$B$,$ F$,$ G$,$ H$","$A$,$ C$,$ D$,$ E$,$ F$,$ G$,$ H$"]$

c$.$ How much slack is in activity A$?[$ Select $]["3\mathrm{.}0$ days", $"5\mathrm{.}0$ days", $"0-$ it is on the critical path", $"19\mathrm{.}6$ days", $"7\mathrm{.}5$ days"$],$ and activity B$?[$ Select $]["19\mathrm{.}5$ days", $"22\mathrm{.}6$ days", $"0$ days", $"6\mathrm{.}7$ days", $"11\mathrm{.}4$ days"$]$

d$.$ What is the Late Start $/$ Late Finish for activity B$?[$ Select $]["19$ and $28\mathrm{.}5","16\mathrm{.}5$ and $27\mathrm{.}8","22\mathrm{.}6$ and $26\mathrm{.}3","16\mathrm{.}3$ and $26\mathrm{.}3","0$ and $9\mathrm{.}7"]$

e$.$ What would happen to the overall project length of activity E was delayed by $4$ days, now taking a total of $14$ days? $[$ Select $]["$the project length will now be $57$ days", "the project length would remain the same", "the project time would be reduced by $4$ days because of E having $4$ days of slack", "the project length would remain the same, but c would now be on the critical path", "the project length will now be $53\mathrm{.}7$ days"$]$