the domain and range of the function f(x) = √x - 2 is

a. all real number excluding 2 and all positive numbers

b. all real numbers and all positive numbers

c. all real numbers smaller than or equal to 2 and all positive numbers

d. all real number greater than or equal to 2 and all positive numbers

a. all real number excluding 2 and all positive numbers

b. all real numbers and all positive numbers

c. all real numbers smaller than or equal to 2 and all positive numbers

d. all real number greater than or equal to 2 and all positive numbers