An infinite number of charges each equal to q are placed along the x axis at $x = 1, x = 4, x = 8 ……..$ and so on. Choose the correct option/s.(A) the potential at the point x = 0 due to the set of charges given is $ \large\frac{2q}{4 \pi \in_0}$
(B) the potential at the point x = 0 due to the set of charges given is $\large\frac{q}{4 \pi \in_0}$.
(C) the potential if in the above set up the consecutive charge have opposite sign is $ \large\frac{1}{4 \pi \in_0 } \bigg( \large\frac{2q}{3}\bigg)$ .
(D) the potential if in the above set up the consecutive charge have opposite sign is $\large\frac{1}{4\pi \in_0 } \bigg(\large\frac{q}{3} \bigg)$