Javier drops in on his friend Luiz to see how his first project management assignment is going. Luiz had just finished the defining and organizing phase and presented his plan to project stakeholders. In his plan, he drew on prior experience to estimate the average expected time to perform a task and presented the figures as estimates only. Likewise, Luiz avoided discussing detailed assumptions and variables and padded his estimates for safety. Javier immediately recognizes that Luiz has made a critical mistake in the process. What should Luiz have done differently? Choose from the following? Luiz should not have used experience as a basis for his time estimates; he should have used a more accurate method of estimating task duration. Luiz should have made firm commitments to complete tasks on time, not just estimates. Luiz should have made stakeholders aware of the assumptions and variables built into his estimates. Luiz should not have padded his estimates.