Heat flows between two reservoirs having temperatures 1000 K and 500 K, respectively. If the entropy change of the cold reservoir is 10 kJ/K, then what is the entropy change for the hot reservoir?

• A. \[-\,\,10\,\,kJ/K\]
• B. \[-\,\,5\,\,kJ/K\]
• C. \[5\,\,kJ/K\]
• D. \[10\,\,kJ/K\]