Electric potential and electric field physics problem

[hoseA]

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Four positive charges of magnitude q are ar-
ranged at the corners of a square, as shown.
At the center C of the square, the potential
due to one charge alone is V0, and the electric
field due to one charge alone has magnitude
E0.

Which of the following correctly gives the
electric potential and the magnitude of the
electric field at the center of the square due to
all four charges?

I think the Electric Potential is 4V0 and the Electric Field is 0. Is this correct?

Btw - all 4 charges = +q

 

[stunner5000pt]

that is correct
the electric field is 0 and the potential is 4V0
electric field is zero only because all the charges are identical.

 

[hoseA]

that is correct
the electric field is 0 and the potential is 4V0
electric field is zero only because all the charges are identical.

Thanks for the confirmation.