computer networking

3. Which of the following statements about network analysis and design is (are) true? A. Normally, two or three logical network designs are prepared to show the trade-off between cost and performance B. The RFP invites an IT vendor to respond to the identified requirements for a to-be network and to submit its offer C. During the testing phase, RFPs received from vendors are compared to technical design documents D. a and b E. a,b and c