In a responsive Grid, which class, breaks the row of columns, when the window size is smaller than portrait tablet?

In a responsive Grid, which class, breaks the row of columns, when the

1.	In a responsive Grid, which class, breaks the row of columns, when the window size is smaller than portrait tablet?
Answer» In a responsive GRID, which class, breaks the ROW of columns, when the WINDOW size is smaller than portrait TABLET? Select the correct option from below list (1)responsive-sm (2)responsive-lg (3)responsive-md Answer:-(3)responsive-md