Context: The objects are identical except for their temperatures.
Which object has the least thermal energy?
A. a 9-kilogram gold bar at a temperature of 91°C
B. a 9-kilogram gold bar at a temperature of 77°C
C. a 9-kilogram gold bar at a temperature of 89°C
From the given choices, select the correct answer and reply with the letter of the chosen option.

B