The Freezing Point of Ammonia (NH₃, 17 $\degree$ CIn an Experiment, 367

The freezing point of ammonia (NH₃, 17.04 g/mol) is -77.73 $\degree$ C.In an experiment, 367.2 grams of solid NH₃ at-77.73 $\degree$ C is used to cool 250.0 grams of liquid NH₃ from 25.00 $\degree$ C to the freezing point.Assume that the specific heat capacity of liquid NH₃ is 4.742 J/(g . $\degree$ C) .What is the enthalpy of fusion of ammonia?

A) 2.894 kJ/mol
B) (-2.894 kJ/mol)
C) 5.652 kJ/mol
D) (-5.652 kJ/mol)
E) 0.3315 kJ/mol