单项选择题

作业Jl，J2，J3，J4的提交时间和运行时间如下表所示。若采用短作业优先调度算法，则作业调度次序为（），平均周转时间为（）分钟（这里不考虑操作系统的开销）。

若采用短作业优先调度算法，则作业调度次序为（）

A．J3→J4→J2→J1
B．J1→J2→J3→J4
C．J1→J3→J4→J2
D．J4→J3→J2→J1

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