Which of these is a risk of the Waterfall SDLC Method?

a Full requirements may not be defined before full analysis begins.

b There is a greater possibility that the customer will be dissatisfied with the delivered software product.

c It is not a reliable and proven method, so projects using it are vulnerable.

d The stakeholder may be intimated by all of the stages required.

e As new methodogy, it may not be supported by business stakeholders.