If f of x and g of x are quadratic functions but open paren f plus g close paren of x produces the graph, which statement must be true?
A
The leading coefficients of f of x and g of x are reciprocals.B
The leading coefficients of f of x and g of x are the same.C
The leading coefficients of f of x and g of x are opposite reciprocals.D
The leading coefficients of f of x and g of x are opposites.