A Pigeon Is Trained with Two Separate S^D Stimuli, a Tone

Multiple Choice

A pigeon is trained with two separate S^D stimuli, a tone and a yellow light. Assume that a green light serves as an S^Δ and acquires an extraordinary amount of inhibition, such that it will generalize very widely across the spectrum. What should happen to peak shift around the S^D?

A) Nothing.
B) It should be shifted very far toward red.
C) It will be reduced (i.e., the spread of inhibition will go past the S^D, making the excitatory gradient around the S^D very narrow) .
D) It will actually reverse the peak shift, moving it to wavelengths below green.