URGENT!!!PLEASE HELP! PLEASE PLEASE! Choose the number below that fits into the following number sets:

Natural Number

Whole Number

Integer

A. -½

B. 4.9

C. π

D. 6

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.