You are taking over a project and determine the following: Activity B has an early finish(EF)of day 3, a late finish(LF)of day 6, and an early start(ES)of day 2. Activity L is being done by a hard-to-get resource. The cost performance index(CPI) is 1.1 and the schedule performance index(SPI)is 0.8. Based on this information, what would you be more concerned about ？（）
A．Float
B．Resources
C．Cost
D．Schedule
