The figure shows two condense milk tins p and q, with one hole and q with two holes. It was observed that milk flowed out faster from Q than from P when tiled. Why?

• A.  Q is bigger than P
• B.     Milk only flows out through Q.
• C.     Air enters through both holes and pushes the milk out from Q.
• D.     Air enters through one hole and pushes the milk out from the other hole.