The Four Phases of the SDLC Approach After the Initial

The four phases of the SDLC approach after the initial system definition phase are:

A) requirements analysis, implementation, design, and system upgrade.
B) requirements analysis, component design, implementation, and system maintenance.
C) requirements analysis, component design, implementation, and conversion.
D) requirements analysis, implementation, design and training.
E) requirements analysis, implementation, component design, and training.