The Owner/operator of the Local Franchise of Handyman, Inc If He Uses the Earliest Due Date First Priority Rule

The owner/operator of the local franchise of Handyman, Inc., has four jobs to do today, shown in the order they were received: $$\begin{array} { c c c } \hline \text { Job } & \begin{array} { c } \text { Processing Time } \\\text { (hrs) }\end{array} & \begin{array} { c } \text { Due } \\\text { (hrs from now) }\end{array} \\\text { W } & 4 & 4 \\\text { X } & 3 & 5 \\\text { Y } & 2 & 2 \\\text { Z } & 1 & 1\end{array}$$
If he uses the earliest due date first priority rule to schedule these jobs, what will be the average job tardiness?

A) 0 hours
B) 1.5 hours
C) 1.75 hours
D) 2 hours
E) 2.25 hours