A 200-Kg Block of Aluminum at 50

A 2.00-kg block of aluminum at 50.0 °C is dropped into 5.00 kg of water at 20.0 °C. What is the change in entropy during the approach to equilibrium, assuming no heat is exchanged with the environment? The specific heat of aluminum is 0.22 cal/(g∙K) .

A) 8.08 J/K
B) 10.1 J/K
C) 3.25 × 10^-2 J/K
D) 3.80 × 10^-3 J/K
E) 2.41 × 10^-3 J/K