For a function of the form f(x) = avx -h + k, why are some real numbers excluded from the domain and the range? Choose the correct answer below. O A. Since only nonnegative numbers have real square roots, the value of x must be greater than or equal to h so that the radicand is nonnegative. Since the principal square root is always nonnegative, the function values will always be greater than or equal to k. O B. Since only nonnegative numbers have real square roots, the value of x must be greater than or equal to k so that the radicand is nonnegative. Since the principal square root is always nonnegative, the function values will always be greater than or equal to h. O C. Since only positive numbers have real square roots, the value of x must be greater than h so that the radicand is positive. Since the principal square root is always positive, the function always be greater than a. O D. Since only positive numbers have real square roots, the value of x must be greater than k so that the radicand is positive. Since the principal square root is always positive, the function always be greater than h. O E. Since only positive numbers have real square roots, the value of x must be greater than h so that the radicand is positive. Since the principal square root is always positive, the function always be greater than k. O F. Since only nonnegative numbers have real square roots, the value of x must be greater than or equal to h so that the radicand is nonnegative. Since the principal square root is always nonnegative, the function values will always be greater than or equal to a