$(7\mathrm{.}5$ points$)$ There are $10$ assembly tasks for a product.

$\backslash$table$[[$Task$,$A$,$B$,$C$,$D$,$E$,$F$,$G$,$H$,$I,J$],[$Task Time $($in seconds$),7,5,3,4,2,5,6,7,11,4],[$Immediate Predecessor$($s$),-,-,-,-,$A$,$ B$,$C$,$D$,$E$,$ F$,$F$,$ G$,$H$,$ I$]]$

Assume that the following assignment of the tasks to the workstations is proposed by the Industrial Engineer of the company.

$\backslash$table$[[$Workstation$,$Assigned Tasks$],[$WS$1,$C$,$ D$,$ F$],[$WS$2,$G$,$ E$],[$WS$3,$A$,$ B$],[$WS$4,$I$],[$WS$5,H,J$