is hard to post all the work here.
but p(AnB^c)^c n C=P(A^cnB) n C.
this why i almost sure it D.
i tell you why i am not sure if is D, well because i am not sure if is need to be only the part in B and C except the part A or the part in all C except the part A and C as showing in option A.
so can you help me with that ?
thanks.