If a timebox (iteration) plan needs to be reprioritised in a hurry, who should re-prioritise?
a) The developers alone (they know what the customer wants by now)
b) The customer alone (the developers would only choose the easy things as top priority)
c) The Project Leader (they can give an independent, pragmatic view)
d) The whole team including customer and developers (together they can consider both business value and practicality)