If a Shock Is Always Preceded by a Tone,and Then

Multiple Choice

If a shock is always preceded by a tone,and then sometimes also is preceded by a light that accompanies the tone,a rat will react

A) with no fear either to the tone or to the light.
B) with fear to the tone but not to the light.
C) with fear to the light but not to the tone.
D) with equally high levels of fear both to the tone and to the light.