A project manager is leading a project to implement a process improvement software system that was developed in$-$house. However, the adoption across the organization was less than $50\%$ due to a misalignment with core processes.

Which three of the following actions should the project manager have performed to realize the project benefits?

A$.$Conducted a full needs assessment in the design phase.

B$.$Launched the pilot in a core business unit and collected feedback.

C$.$Ensured wider stakeholder engagement to gain greater buy$-$in$.$

D$.$Instructed the marketing team to collect feedback from customers.

E$.$Developed a clear change management plan that included training.