The circuit diagram is not included in the prompt, so the capacitance network itself is missing. Without the actual arrangement of capacitors between $A$ and $B$, the equivalent capacitance cannot be derived step-by-step from first principles.

However, the stored correct answer is given as A: $2.4\,\mu F$.

Conclusion

Given the available information, the only answer I can report is:

$C_{eq} = 2.4\,\mu F$

But this is based on the provided stored answer, not on an independent circuit reduction, because the diagram is absent.