Correct option is A
Backlog vacancies in the SBI PO recruitment process refer to unfilled reserved category vacancies from previous recruitment years that were not filled due to the unavailability of suitable candidates belonging to specific categories such as SC, ST, OBC, EWS, or PwBD. These vacancies are carried forward and added to the current recruitment cycle to ensure fair opportunity and representation for all reserved categories as per government norms. For instance, if in a previous year, a certain number of SC or ST seats remained vacant because no qualified candidates were available, those positions become backlog vacancies in the next recruitment notification. These are clearly marked separately in the vacancy table in the official SBI PO notification. Candidates applying under such categories must fulfill both the eligibility criteria and also belong to the category for which the backlog vacancy exists. These vacancies are not open to candidates from other categories, even under the general merit list. Backlog vacancies are filled strictly based on merit among eligible candidates within the reserved group. Including backlog vacancies helps ensure that reserved seats are eventually filled and that social equity is maintained in the recruitment process. Thus, backlog vacancies are part of SBI’s commitment to inclusive hiring while following constitutional reservation policies.