Two Jobs (J1 and J2) Are Scheduled on Two Workcenters

Multiple Choice

Two jobs (J1 and J2) are scheduled on two workcenters (WCA and WCB) . J1 starts at time 0 on WCA and finishes on that workcenter at time 5. J2 starts at time 0 on WCB and finishes at time 3. J2 then starts on WCA at time 5 and finishes at time 9. J1 has a due date of time 6 and J2 has a due date of time 7. What is the tardiness of J1?

A) 0
B) 1
C) 2
D) 4