During project execution，the customer authorizes and funds a scope change which requires a major change in the schedule．The baseline schedule （）．
A．now becomes the new schedule，including the changes，and the original baseline is disregarded
B．is still the original baseline but annotated to reflect that a change has taken place
C．is amended to reflect the scope change，but the original baseline is still maintained for post-project review
D．is meaningless since every schedule update changes the baseline