A function is defined by the equation y = x2 + 3x + 1. Which statements are true? Select all that apply. A. The equation written in vertex form is y=(x+32)2−54. B. The equation written in vertex form is y=(x+54)2−32. C. The graph of the function has a minimum of y=−54 at x=−32. D. The domain of the function is all real numbers.