Objects $A$ and $B$ that are initially separated from each other and well isolated from their surroundings are then brought into thermal contact. Initially $T_A = 0^{\circ}C$ and $T_B = 100^{\circ}C$. The specific heat of $A$ is less than the specific heat of $B$. After some time,the system comes to an equilibrium state. The final temperatures are :

• A
  $T_A = T_B > 50^{\circ}C$
• B
  $T_A > T_B > 50^{\circ}C$
• C
  $T_A = T_B < 50^{\circ}C$
• D
  $T_B > T_A > 50^{\circ}C$