【单选题】

The following information is available about a particular task in your project plan：early start(ES)，25 days；late start(LS)，30 days；early finish(EF)，50 days；late finish(LF)，55 days．Based on this information。you can deduce that______．
A．the project float is 5 days

B．the project may get delayed
C．the task is not on the critical path
D．the task is on the critical path