Option D is right option for it.
Explanation::
S->XSS will kept under action prt of b.
Similirly S->XS will be kept under action part of b.
So under same enteries we never ever put more than one value so given grammar is not LL(1).
For SLR(1) ,reduces item kept under the the follow of left hand symbol.So if u check above it is not SLR(1)