Answer:
The parent function is given below as

From the image below,
The parent function has been transformed by shifting it 2 units up to give the equation of b(x) below

The function of a(x) is given below as
The stretch factor of b(x) is =1
The stretch factor of a(x) = 1/3

By comparing the two functions, based on the stretch factor, we can thereby conclude that

Hence,
The THIRD OPTION is the right answer