$T_2,T_4,T_6,T_8,T_7,T_3,T_5,T_1$

A$)15$

B$)17$

C$)19$

D$)21$

E$)$ None of these

$19.$ Determine the time it would take to complete the tasks with two machines using the critical path scheduling algorithm.

C$)18$

D$)20$

E$)$ None of these

A$)14$

B$)16$