Sample of silver at 20.0°C is warmed to 60.0°C when 896 cal is added. What is the mass of the silver? (Assume the specific heat capacity of Csilver is 0.056 cal g/°C)

a. 200 g
b. 0.2 kg
c. 640 kg
d. 400 kg
e. 0.4 kg