What are the domain and range of the step function?
A
domain = {all integers}, range = {all real numbers}B
domain = {all real numbers}, range = {all real numbers}C
domain is equal to dot dot dot minus 5 comma negative 2 comma 1 comma 4 comma dot dot dot , range is equal to dot dot dot minus 4 comma negative 1 comma 2 comma 5 comma dot dot dotD
domain = {all real numbers}, range is equal to dot dot dot minus 4 comma negative 1 comma 2 comma 5 comma dot dot dot