NEET Re Exam 2022 Biology Paper

In single kreb's cycle, decarboxylation takes place at following two steps:
(1) At 4‌th ‌ step, where isocitrate gives off a pair of H-atoms (oxidation) and a molecule of CO2 (decarboxylation) and becomes 5−C α-Ketoglutarate.
(2) 5‌th ‌ step-where coenzyme-A reacts with α Ketoglutarate forming 4-C SuccinylCoenzyme A and releasing CO2 and a pair hydrogen atoms.
The question is specifically asking for isocitrate