Point charges in plane

As shown above, two point charges AA and BB are fixed on the xx-axis with an equal distance of dd from the origin O.O. AA is charged negatively, while BB is charged positively. The quantities of the electric charges on AA and BB are the same. The distances between the origin OO and the two points PP and QQ on the yy-axis are also the same, which is d.d. Which of the following is correct?

a) The electric field intensities at PP and QQ are the same.

b) The direction of the electric field at OO is the x-x direction.

c) If we move the point charge AA to OO, then the directions of the electric fields at PP and QQ are the same.

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