How can the task set shown in Table 11.30 be optimally scheduled (using fixedpriority scheduling)? Is this task set schedulable?
$$
\begin{array}{crrrr}
\hline \text { Task } & \boldsymbol{T} & \boldsymbol{C} & \boldsymbol{B} & \boldsymbol{D} \\
\hline a & 8 & 4 & 2 & 8 \\
b & 10 & 2 & 2 & 5 \\
c & 30 & 5 & 2 & 30 \\
\hline
\end{array}
$$