In Rejecting Small Offers in the Ultimatum Game, the Recipients

In rejecting small offers in the ultimatum game, the recipients are typically objecting to the unfair intent behind the offer rather than the magnitude of the offer itself. We know this because:

A) Recipients are typically willing to accept small offers from computerized proposers but expect larger offers from human proposers.
B) Proposers offer substantial amounts both in the dictator and ultimatum games.
C) The amounts offered by proposers do not vary widely across cultures.
D) The amounts offered vary widely across cultures starting from family-based hunter gatherers to cooperative whale hunters.