Question about Depth Shader

If d is the fragment depth in the NDCS$,$ what output colour below from the fragment shader will cause a fragment at the near clipping plane to be white and a fragment at the far clipping plane to be black?

vec$4(d,d,d,1)$

vec$(1-$d$,1-$d$,1-$d$,1)$

vec$4(0\mathrm{.}5(d+1),0\mathrm{.}5(d+1),0\mathrm{.}5(d+1),1)$

vec$4(0\mathrm{.}5(1-d),0\mathrm{.}5(1-d),0\mathrm{.}5(1-d),1)$