The parent function f (x) = x2 is reflected across the x-axis, vertically stretched by a factor of 3, and translated right 7 units to create g(x). Use the description to write the quadratic function in vertex form.
O A. g(x) = -3(x – 7)2
O B. g(x) = 7(x + 3)?
O c. g(x) = 3(x – 7)
O D. g(x) = -3(x + 7)?