Answer:
C. 
Step-by-step explanation:
Let's find the inverse of each of the given options.
Option A:

To find
, replace 'x' with 'y' and 'y' with 'x'. This gives,

Rewrite in terms of 'y'. This gives,

The given function 
So, option A is incorrect.
Option B:

To find
, replace 'x' with 'y' and 'y' with 'x'. This gives,

Rewrite in terms of 'y'. This gives,

The given function 
So, option B is incorrect.
Option C:

To find
, replace 'x' with 'y' and 'y' with 'x'. This gives,

Rewrite in terms of 'y'. This gives,

The given function 
So, option C is correct.
Option D:

To find
, replace 'x' with 'y' and 'y' with 'x'. This gives,

Rewrite in terms of 'y'. This gives,

The given function 
So, option D is incorrect.
Therefore, only option C is correct.