Function g is a transformation of parent graph f(x)=x^2. the graph of f is reflected across the x -axis and then translated left 6 and up five units to form the graph of g. What is the function rule for g? And why

A. g(x)=-x^2+10x+19
B. g(x)=-x^2-10x-19
C. g(x)=-x^2-12x-31
D. g(x)=x^2-12+31