Which of these is the best exclamation for why to negatively charged balloons, if put close, will repel?

a. charged objects sin little lightning bolts of electrons across the space between the two balloons

b. the space between objects is actually filled with charged particles that all interact

c. electrons from one balloon jump to the other and push it, without ever touching it

d. electric charges have electric fields surrounding them that allow them to exert forces on other objects without touching them

i chose a. but i'm just not really sure