What about the possibility of incompatible values? (c) and (d) basically say, group B's values are faulty or badly applied, and the onus is on them to reassess them. Excluding the possibility that cultural_value_A might clash with cultural_value_B seems unfair to group B.

(I'd explore my thoughts, but I'm actually kinda busy, so I'm hoping you'll explore yours and I can argue or agree with you. :) )