Answer:
B- the domain of function A is the set of real numbers is greater than 0
The domain of the function B is the set of real numbers greater than or equal to 1
Explanation:
The function A is

By definition we know that the function
is not defined for values of

Therefore the domain of
is:
All real numbers greater than 0.

Function B shown in the graph is a curve that goes in x from x = 1 to infinity.
Therefore it can be seen that the domain of this function is:
all real numbers greater than or equal to 1.
.
Therefore the correct option is B.