Which of the following represents a major limitation of Management by Objectives (MBO)?

In the MBO process, arrange the following activities in their correct operational sequence: (i) Conducting periodic performance review against agreed objectives (ii) Identifying Key Result Areas at organisational and functional levels (iii) Developing action plans with assigned responsibilities, resources, and schedules (iv) Setting specific measurable objectives within identified KRAs

Assertion (A): Participatory objective-setting in MBO produces more realistic targets than unilaterally imposed objectives. Reason (R): Managers engaged in a function have direct knowledge of operational constraints — market conditions, labour availability, production capacity — making their input indispensable for realistic target-setting. Which option is correct?