Given is a CPM proiect network diaaram as shown below.

$\backslash$table$[[$Activity$,$Start,A$,$B$,$C$,$D$,$E$,$F$,$G$,$H$,$End$],[$day$,0,3,8,6,7,3,4,5,8,0]]$

a$)$ The Project Completion time $=$ Blank $1_{?}$ days.

b$)$ The Earliest Start time, ES$,$ of Activity G$=$ Blank $2$ days.

c$)$ The Latest Finish time, LF$,$ of Activity C$=$ Blank $3$ days.

d$)$ The critical activities are $=$ Blank $4(ex.$ Fill $in$ the answer $as$: ABCD${)}_{?}$