Answer
The equivalent capacitance in all four circuits is the same.
Work Step by Step
In all four circuits, $C_1$ and $C_2$ are in parallel. The equivalent capacitance of these two capacitors is equal in all four circuits.
In all four circuits, the equivalent capacitance of $C_1$ and $C_2$ is then in series with $C_3$.
Therefore, the equivalent capacitance in all four circuits is the same.
