Those batteries and capacitor are all in series. The current will follow through them one after each other.
If they were in parallel, the current could take two different paths (hence the parallel part).
Keep in mind that if you were to extend the circuit, this would change. But as it is, from the viewpoint of each battery, the two capacitors (and other battery) are in series.
This circuit simplifies to a 16 V source applied to a 3F and 5F capacitor in serie. This splits the voltage 10 V and 6 V (5 eighth and 3 eighth) between them, which is how they pick two of the multiple choice answers.