A. Phase-driven implementation approach.
B. Process-oriented implementation approach.
C. Reengineering-driven implementation approach.
D. Prototyping as implementation concept.
If the gifts are passed on, the whole purpose of the gift is defeated. Therefore, the gift should be one that is useful and at the same time it attracts you, appeals to you and you retain it. Conclusions : I. If gifts are retained , their utility increases. II. Gifts are not meant for repeated change of hands.