For the function f(x) = (x − 2)2 + 4, identify the vertex, domain, and range. a. the vertex is (–2, 4), the domain is all real numbers, and the range is y ≥ 4. b. the vertex is (–2, 4), the domain is all real numbers, and the range is y ≤ 4. c. the vertex is (2, 4), the domain is all real numbers, and the range is y ≤ 4. d. the vertex is (2, 4), the domain is all real numbers, and the range is y ≥ 4.