Refer to the Scenario Below to Answer the Questions That

Refer to the scenario below to answer the questions that follow.
In an extended experiment, rats receive five kinds of trials within four-hour-long sessions of daily training over a period of five months. A tone is followed by food only when it is preceded by a small light on the left side of the wall (L_L) ; no food is given when the tone is presented by itself (L_L→T+, T‒) . A small light on the right side of the wall (R_L) is followed by food when it was preceded by a clicker; no food is given when the tone is presented by itself (C→R_L+, R_L‒) . Finally, a white noise (N) is followed by food 40% of the time.
-The experimenter gives the rats several extinction trials in which C occurs alone. If she then tests C with R_L she will find that the response to C→R_L has

A) declined, showing that C was an occasion setter.
B) declined, showing that C was a simple excitor.
C) remained the same, showing that R_L was an occasion setter for
D) remained the same, showing that R_L was a simple excitor.