What are the domain and range of the step function with the equation below?
fx)=-3[x]
The domain is all real numbers, and the range is all real numbers.
0 The domain is all integers, and the range is all integers that are multiples of 3.
O The domain is all real numbers, and the range is all integers that are multiples of 3.
The domain is all integers, and the range is all real numbers.