ob is responsible for estimating a work package that has a significant amount of uncertainty associated with the time and cost to complete. Due to the uncertainty involved he will be making a low, an average and a high estimate. Rob is using which estimating approach?

Question $2$Select one:

A$.$

Parametric procedures applied to specific tasks

B$.$

Template method

C$.$

Apportion method

D$.$

Range estimating

E$.$

Learning curve