1-600:Applied Calculusfor Finding DerivativesQuestion 12,4.1.259 corrExplain the relationship between the slope and the derivative of f(x) at x=a.Choose the correct answer below.A. The derivative of f(x) at x=a equals the slope of the function at x=a.B. The slope of the function at x=a describes the rate of change for the derivative of f(x) at x=a.C. The derivative of f(x) at x=a describes the rate of change for the slope of the function at x=a.D. The derivative of f(x) at x=a is unrelated to the slope of the function at x=a.