You manage a project with 10 activities. Activities A₁, A₃, A₅, and A₉ form the critical path. Because you have a large budget for the project, you consider crashing activity A₂, which has the potential to shorten the time of A₂ by three days. What do you think about this opportunity? 

a. It is a good idea because it will reduce the project duration by three days. 

b. It is a bad idea because A₂ is not on the critical path.