A Ring of Charge of Radius R₀ Lies in the X-Y

Multiple Choice

A ring of charge of radius r₀ lies in the x-y plane with its center at the origin.The charge counterclockwise from θ = 0º to θ = 180º is uniformly distributed with the total charge equaling Q.The charge counterclockwise from θ = 180º to θ = 360º is uniformly distributed with the total charge for this half of the ring equaling -Q.What is the direction of the electric field on the z-axis at the position (x,y,z) = (0,0,​r₀) ?

A) It is in the +y direction.
B) It is in the -z direction.
C) It is in the -​y direction.
D) It has no direction since
there.