Figure shows drift speed Va of conduction electrons in a copper wire versus position (X) for the three sections. Then,

(A) Radius of III > Radius of II > Radius of I
(B) Electric Field in III > Electric Field in II > Electric Field in I
(C) Radius of wire is same in all sections
(D) Conductivity is same in all sections

Choose the correct answer from the options given below:

(A) and (D) only

The correct answer is Option (3) → (A) and (D) only