A mass m of ice at a temperature of –5 °C is changed into water at a temperature of 50 °C.

Specific heat capacity of ice = c_i
Specific heat capacity of water = c_w
Specific latent heat of fusion of ice = L

Which expression gives the energy needed for this change to occur?

A.  55 m c_w + m L

B.  55 m c_i + 5 m L

C.  5 m c_i + 50 m c_w + m L

D.  5 m c_i + 50 m c_w + 5 m L

C