A 10-Kg Piece of Marble at 100ºC Is Dropped into 2

A 1.0-kg piece of marble at 100ºC is dropped into 2.5 kg of water at 1.0ºC and the resulting temperature is 7.0ºC.The specific heat of the marble is approximately

A) 0.16 kcal/kg · Cº
B) 0.75 kcal/kg · Cº
C) 0.61 kcal/kg · Cº
D) 0.30 kcal/kg · Cº
E) 0.26 kcal/kg · Cº