A．A group of taste neurons is found which only responds to sweet taste when stimulated by sweet foods.
B．A brain-wave analysis of a rat genetically engineered to lack a sense of sweet tastes is nevertheless found to have a sense of sour tastes.
C．Most tastes are found to have strikingly different neurological effects on humans they do upon animals.
D．A brain-wave analysis of a hamster demonstrates a similar pattern of activity in a given neurological area for both sour and ,sweet stimuli.
E． A group of taste neurons is found which provides insufficient information for taste discrimination.