Answer:
last choice
Explanation:
Specific heat of a metal is   j/kg-c
It says nothing about melting point or heat of fusion
A = twice B  =  2 * j/kg-c    B = j/kg-c
 if  j is constant and mass is the same we can write this more like
  A = 2 /C    and   B = 1/C
 or   A ~  C/2    and  B~  C
now you can see that the temp change in A Â will be 1/2 Â that of B