Given:
The function is:

where
.
To find:
The range of the given function.
Solution:
Range is the set of output values.
We have,
. It means the value of x is greater than 6 but not equal to 6.
The function is

Putting x=7, we get



Putting x=8, we get



Putting x=9, we get



So, the range of the given function is {31, 36, 41...}.
Therefore, the correct option is B.