Shown here is the picture of an ink filler. When the ink filler is dipped into a beaker of water and the bulb is pressed, air bubbles appear in water. Why does this happen?

• A.  The air in the atmosphere forms bubbles.
• B.     The air in the ink filler is released which forms bubbles.
• C.     The liquid rushes into the filler forming bubbles.
• D.     The air in the water forms bubbles.