cycle time is $100$ seconds, what is the laie time

Workstation $1$

$\backslash$table$[[$Task$($s$)$ Assigned,Time $($sec$)],[$Task B$,30],[$Task E$,60]]$

Workstation $2$

$\backslash$table$[[$Task$($s$)$ Assigned,Time $($sec$)],[$Task C$,10],[$Task A$,40],[$Task D$,20]]$

$30$ seconds

$10$ seconds

$20$ seconds

$40$ seconds