Question $1(3$ points$)$

which one is not one of Maxwell's equations?

$3$ grad$*vec(D)={}_v$

nformation grad$*B^{}=0$

vec$(B)=$grad$$vec$(A)$

grad$$vec$(H)=$vec$(J)+\frac{\text{d}\text{e}\text{l}(vec(D))}{\text{d}\text{e}\text{l}\text{t}}$