A hospital's blood draw and specimen collection process presented a high turnaround time $($TAT$).$ Following the DMAIC approach to improving that process, a team concluded that the two following change ideas could reduce TAT: reducing the number of vials per specimen from $9$ to $4$ and converting paper$-$controlled documents traveling with each sample to electronic format. What would be the best step for the team now?

Implement the changes and control the process

Run a pilot test of the new process

Use the change ideas to produce change concepts

Select the best general change concept for the situation