X-Market Uses a Red Light Commonly Found at Traffic Intersections

Multiple Choice

X-market uses a red light commonly found at traffic intersections to indicate a sale price.Y-market uses a blue light rarely seen by its customers to indicate a sale price.The customers at Y-market learn to run to the sale item much sooner than those at X-market.This is an example of

A) a bidirectional response.
B) the compound-stimulus principle.
C) retardation of acquisition.
D) inhibitory conditioning.