Find the Domain and Range of the Inverse of the Given

Multiple Choice

Find the domain and range of the inverse of the given function.
-f(x) = 8x + 6

A) Domain: $( - \infty , 6 ]$ ; range: all real numbers
B) Domain: $[ 8 , \infty )$ , range: $( - \infty , 6 ]$
C) Domain: all real numbers, range: $( - \infty , 6 ]$
D) Domain and range: all real numbers