[A] is square matrix which is neither symmetric nor skew-symmetric and [A]^T is its transpose. The sum and difference of these matrices are defined as [S] = [A] + [A]^T and [D] = [A] - [A]^T, respectively. Which of the following statements is TRUE?

A. Both [S] and [D] are symmetric

B. Both [S] and [D] are skew-symmetric

C. [S] is skew-symmetric and [D] is symmetric

D. [S] is symmetric and [D] is skew-symmetric

Answer: Option D