Complete the ES, EF, LS, LF Chart and Be Prepared

Complete the ES, EF, LS, LF chart and be prepared to answer questions below.
Find the slack on all events
$\begin{array}{|c|c|c|c|c|c|c|c|}\hline \text { Activity } & \text { Duratlon } & \text { Predecessor } & \text { ES } & \text { EF } & \text { LS } & \text { LF } & \text { Slack } \\\hline \text { A } & 2 & & 0 & 2 & & & \\\hline \text { B } & 4 & & 0 & 4 & & & \\\hline \text { C } & 1 & \text { A } & 2 & 3 & & & \\\hline \text { D } & 1 & \mathrm{~B} & 4 & 5 & & & \\\hline \text { E } & 7 & \mathrm{~B} & 4 & & & & \\\hline \text { F } & 3 & \mathrm{C}, \mathrm{D} & & & & & \\\hline \text { G } & 5 & \mathrm{E}, \mathrm{F} & & & & & \\\hline\end{array}$ a. Give EF of Activity F
b. Give ES of Activity G
c. Give LS of Activity F
d. Give LF of Activity B
e. Give slack for Activity D
f. Give length of critical path