The correct option is D Only 4
If 'K' is included 'L' has to be included (statement three) If 'L' is chosen neither N nor U can be chosen (statements five and six) S, W are also not included because S, U, W have to be always together. (Statement four) Hence one of P (or) R would be selected (statement one) and one of M (or) Q would be selected statement (two) (K, L) and two of the above five have to be included.