Which of the following is a correct statement about the Fundamental Theorem of Calculus?

a$)$ It relates the concept of a function's rate of change to its accumulation.

b$)$ It states that any continuous function can be approximated by a polynomial.

c$)$ It is used to find the area under a curve by integrating its rate of change.

d$)$ It establishes the relationship between the coefficients and roots of a polynomial equation.