Combination of Capacitors question from MHT CET 2021 (23 Sep, Shift 2)

Answer: (a)

1. The left pair joins A and B directly; the right pair joins B to the top wire, which goes back to A.
2. So all four $5\ \mu\text{F}$ capacitors are in parallel across the 15 V source.
3. Each gets $Q = CV = 5\times 15 = 75\ \mu\text{C}$.
4. So the answer is (a) 75 $\mu$C.