i hate capacitors

u can see that there is a cel of 12v and 4 capacitors in series after the first 3 capcitors the system is earthed..

find the pntential at a and pnt c

a is the before the 1st capactor and c is the pnt after the last capacitor

my doubt is that in the answer it is written potnetial at pnt a is 9v but hows that posssible as there has been no circuit element so that a pontential drop can occur

pls help me and find the pontential at pnt c