i can not find the correct answer for this one

Question

i got D
but someone siad its wrogn
electric field strength depends on
a. charge and distnace
b. charge and mass
c. Coulomb constant and mass
d. elementary charge and radius

Answer 1

nevermind
i think its A
can you check that?

Answer 2

I think it's A also.
Increase Charge = Increase EFS
Increase Distance = Decrease EFS