which of the following represents the instantaneous rate of change of the function f at x=a? Select all that apply.

A.f(a)
B.f(a+h)-f(a)/h
C.lim(h-0)f(a+h)-f(a)/h
D.the slope of the tangent to f at x=a
E.the limit of the secant between x=a and x=a+h as h approaches 0
F.the slope of the secant to f at x=a
G.the derivative of f at x=a