In a systems development life cycle (SDLC) model, the purpose of the _____ is to create a physical model that will satisfy all documented requirements for the system; while the purpose of the _______is to build a logical model of the new system.

a. systems planning phase; systems implementation phase

b. systems analysis phase; systems design phase;

c. systems design phase; systems planning phase

d. systems design phase; systems analysis phase

e. None of these are correct