You have been given a research project to develop a new medication to treat an infection. You are in the process of calculating the duration of the project. As this is a unique project and the calculation of activity duration is not easy, you ask experts to come up with several possible duration estimates for each activity so you can find the average duration. In this scenario, which technique will you use?

(a) EVM

(b) CPM

(c) EMV

(d) PERT