If \(A= \begin{bmatrix} 1 & 5 \\[0.3em] 6 & 2 \\[0.3em] \end{bmatrix} \) and \(B= \begin{bmatrix} 3 & 7 \\[0.3em] 8 & 4 \\[0.3em] \end{bmatrix} \)

I: A + B = \(\begin{bmatrix} 4 & 12 \\[0.3em] 14 & 6 \\[0.3em] \end{bmatrix} \)

II: A² = \(\begin{bmatrix} 31 & 15 \\[0.3em] 18 & 34 \\[0.3em] \end{bmatrix} \)

III: AB^T = \( \begin{bmatrix} 38 & 28 \\[0.3em] 32 & 56 \\[0.3em] \end{bmatrix} \)

Which of the following statement(s) is/are correct.