Two Spheres, Labeled a and B, Have Identical Masses, but Are

Multiple Choice

Two spheres, labeled A and B, have identical masses, but are made of different substances. The specific heat capacity of sphere A is 645 J/(kg · C°) and that of sphere B is 240 J/(kg · C°) . The spheres are initially at 21 °C; and the same quantity of heat is added to each sphere. If the final temperature of sphere A is 74 °C, what is the approximate final temperature of sphere B?

A) 160 °C
B) 140 °C
C) 110 °C
D) 53 °C
E) 39 °C