Andrew the Consultant Is Asked for an Honest, Precise Forecast

Andrew the Consultant is asked for an honest, precise forecast for a project deliverable by a senior manager at the firm. The best approach for Andrew would be to:

A) Show the project plan with tracking details to the manager
B) Be prepared to answer any such questions from management, but defer a more specific answer until a proper check-in and analysis has been done
C) Provide his best estimate on the spot
D) Refer to the last project status report as the most current update
E) Say "I'll get back to you later on this one."