A uniformly charged rod is kept on y-axis with centre at origin, as shown. Which of the following actions will increase the electric field strength at the position of the dot ?

Options

• Option A

  Make the rod longer without changing the charge.

• Option B

  Make the rod shorter without changing the charge.

• Option C

  Make the rod shorter without changing the linear charge density.

• Option D

  Rotate the rod about yy'.