Six point charges are kept at the vertices of a regular hexagon of side L and centre O, as shown in the figure. Given that $$K = \frac{1}{4 \pi ε_0}\frac{q}{L^2}$$, which of the following statement (s) is (are) correct?

A

the elecric field at O is 6K along OD

B

The potential at O is zero

C

The potential at all points on the line PR is same

D

The potential at all points on the line ST is same.