Crashing in time management is ______ .

A．a schedule compression technique that typically includes reducing schedule activity durations and increasing the assignment of resources to schedule activities

B．a schedule compression technique in which phases or activities that normally would be done in sequence are performed in parallel

C．the timely input of data to calculate the critical path

D．equivalent to minimizing float

某书第1版第1次印5000册，后又重印了两次，各4000册。现在根据市场需求决定全面修订后再印4000册，则此次印刷的版本记录应为（）。

A.第2版第4次印刷，印数为13001—17000册

B.第2版第1次印刷，印数为13001—17000册

C.第2版第4次印刷，印数为1—4000册

D.第2版第1次印刷，印数为1—4000册