What is the domain of the function

Question

f(x)=11/Squareroot of 4-x^2

a.(-11,11)
b.[-11,11]
c. (-2,2)
d. [-2,2]

What is the range of the function?
y=8/Squareroot of 4-x^2
a. [4, infinity)
b. (-infinity, 4]
c. [8, infinity)
d. (-infinity, 12]
e. [6, infinity)
f. (-infinity, 6]