What is the output of the matrix multiplication program above?

public class MatrixMultiply {
    public static int[][] multiply(int[][] a, int[][] b) {
        int rows = a.length;
        int cols = b[0].length;
        int sumLength = a[0].length;
        int[][] product = new int[rows][cols];
        for (int i = 0; i < rows; i++){
            for (int j = 0; j < cols; j++){
                int sum = 0;
                for (int k = 0; k < sumLength; k++){
                    sum += a[i][k] * b[k][j];
                }
                product[i][j] = sum;
            }
        }
        return product;
    }
    
    public static void main(String[] args){
        int[][] A = { {1,2,3}, {4,5,6} };
        int[][] B = { {7,8}, {9,10}, {11,12} };
        int[][] C = multiply(A, B);
        for (int[] row : C){
            for (int n : row)
                System.out.print(n + " ");
            System.out.println();
        }
    }
}