What are the domain and range of the step function with the equation? f of x is equal to negative 3 lceil x rceil
A
The domain is all real numbers, and the range is all integers that are multiples of 3 .B
The domain is all integers, and the range is all integers that are multiples of 3 .C
The domain is all integers, and the range is all real numbers.D
The domain is all real numbers, and the range is all real numbers.