Given the following task time estimates $($HOURS$),$ Task Time Predecessor A $40$ B $20$ C $25$ A D $19$ A$,$ B E $25$ C$,$ D F $24$ E G $18$ F a$.$ How long is the project length? $[$blank$1],$ and what tasks form the critical path? $[$blank$2]$ Length $$ hours Crit. Path $$ b$.$ What is the LS$/$LF for activity D$.?[$blank$3].$ LS $$ hours LF $$ hours c$.$ How much slack does activity B have? $[$Blank$4]$ hours d$.$ How much slack is there in activity C$?[$Blank$5]$ How much slack in activity D$?[$Blank$6]$ Act. C Slack $$ hours Act. D Slack $$ hours e$.$ What if activity D$.$ was delayed by $6$ hours, what would be the project length $[$Blank$7]$ and critical path? $[$Blank$8]$ Crit. Path $$