The first non-vanishing term in the multipole expansion of the magnetic vector potential A will never be the n=0 term of that expansion because Group of answer choices there are no magnetic monopoles. all terms of the expansion are ignorable because is so small (4 x 10-7 N/A2 ). all even terms of the multipole expansion for the vector potential vanish by symmetry. electric charge is not conserved in the presence of magnetic fields