A 500-G Sample of a Material at 80

A 50.0-g sample of a material at 80.0°C is dropped into a calorimeter containing 100.0 g of water at 20.0°C. When the mixture reaches thermal equilibrium, it is at a temperature 24.0°C. If heat transfer to the walls of the calorimeter is negligible, what is the specific heat of the material?

A) 0.143 cal/(g∙C°)
B) 0.322 cal/(g∙C°)
C) 0.221 cal/(g∙C°)
D) 0.437 cal/(g∙C°)
E) 0.0714 cal/(g∙C°)