Two thin, long parallel wires separated by a distance '$$d$$' carry a current of '$$i$$' A in the same direction. They will

A

attract each other with a force of $$\mu_0 i^2/(2\pi d)$$

B

repel each other with a force of $$\mu_0 i^2/(2\pi d)$$

C

attract each other with a force of $$\mu_0 i^2/(2\pi d^2)$$

D

repel each other with a force of $$\mu_0 i^2/(2\pi d^2)$$