Final answer:
The range of the function is (-4,2,8).
Step-by-step explanation:
The range of a function is the set of all possible output values of the function. To find the range, we need to determine the y-values of the points given. The y-values are 8, 2, and -4. The range of the function is the set of these values, which is (-4, 2, 8). Therefore, the correct answer is A. (-4,2,8).