Which of the following best explains the value of sing on the unit circle below? (0, 1) 2 (-1,0) (1.0 37 2 (0.-1)

Describe the end behavior of the function below. f(x)=(2/3)^x-2 a. as x increases, f(x) approaches infinity. b. as x decreases, f(x) approaches 2. c. as x increases, f(x) approaches -2. d. as x decreases, f(x) approaches negative infinity.