During an informal meeting between a customer and the project manager, the customer suggests an update to a requirement. The updated requirement will take less time, cost less, and may save effort on the project.What should the project manager do first?
A、Ask the customer initiate a change request process
B、Inform the sponsor and take credit for all the savings through the alternative way
C、Analyze the impact of the new alternative on the project constraint triangle
D、Ask the customer to contract the sponsor directly