This has already been posted, however the provided answer does not make sense. Anyone have additional insight for this one?

Question

An excess of aluminum metal is added to 200.0 mL of 0.025 M solution of CuCl2, reducing the Cu+2 ions to metallic Cu. If the temperature of the solution increases from 25.0 (Celsius) to 27.5 (Celsius), what is the enthalpy of this reaction per mole of Cu formed?

(Specific heat of the solution = 4.18 J/g/K)

Multiple choice solutions are: 2.09 kJ, 23.9 kJ, 83.6 kJ, and 418 kJ.

Thank you!