[单选题]29 Topic1An architect is helping an organization with the Conceptual Design of an NSX-T Data Center solution.This information was gathered by the architect during the Discover Task ofthe Engagement Lifecycle:✑ Existing hardware will be used in any design proposal.✑ Network bandwidth cannot be expanded.Which concept of the Discover Task do these items belong to? (Choose the best answer.) A.constraint B.requirement C.risk D.assumption