The BNSS, 2023 was drafted partly to speed up criminal trials, and one concrete way it does this is by capping how long a judge can sit on a case after arguments close.
Once the two-tier structure, 30 days plus a reasoned 15-day extension, is matched to the option that describes both tiers, the answer becomes clear.
\[ \boxed{\text{Within 30 days (extendable to 45 days)}} \]Since three of the four options use single numbers and only one uses a two-tier figure, it helps to check which structure the BNSS actually adopts for pronouncing judgment.
Only the two-tier, reason-justified structure in option (C) mirrors the actual design of the rule.
Hence, the correct answer is Within 30 days (extendable to 45 days).