between the two lines.

$L1$: $x=-1-t,y=1-2t,z=-1-2t,-$

Select the correct choice below and fill $in$ the answer box$(es)to$ complete your choice.

$(Type$ exact answers, using radicals $as$ needed.$)$

$A.L1$ and $L2$ are skew. Their distance $is$

$B.L1$ and $L2$ intersect $at$ the point

$.$

$C.L1$ and $L2$ are parallel. Their distance $is$

$.$