A project manager is working on a software development project where the client has requested integration with a legacy system that has poor documentation and limited technical support. The integration is possible but would significantly increase project complexity and maintenance burden. What should the project manager do?

Present the client with a detailed analysis of integration complexity, long-term maintenance implications, and alternative approaches

Recommend against the legacy integration due to complexity and maintenance concerns

Implement the integration as requested since the client understands their business needs

Propose building a modern replacement for the legacy system instead of integrating with it