The bob of a simple pendulum is a spherical hollow ball, filled with water. A plugged hole near the bottom of the oscillating bob gets suddenly unplugged. During observation, till water is coming out, the time period of oscillation would

• Correct answer
  A

  First increases and then decreases to the original value
• B

  First decreases and then increases to the original value
• C

  Remains unchanged
• D

  Increases towards a saturation value

Hence, the correct answer is option: 'A'.