Consider the following factors:
1. Adequate incentive
2. Ease of administration
3. Flexibility
4. Guaranteed basic pay
5. Higher wages
6. Simplicity
Among these, the factors which are to be considered while developing a good wage incentive plan would include
(a) 1,2,3 and 5 (b) 2,3,4 and 5
(c) 1,2,4 and 6 (d) 1,2,5 and 6