Context: The objects are identical except for their temperatures.
Which object has the least thermal energy?
A. a 7-kilogram block of copper at a temperature of 17°C
B. a 7-kilogram block of copper at a temperature of 19°C
C. a 7-kilogram block of copper at a temperature of 27°C
Select the correct answer from the given choices and respond with the letter of the chosen option.

A