Ahmad pushed an empty plastic bottle into a pail of water as shown in the picture. Which of the following will take place if Ahmad is to unscrew and remove the cap of the bottle in the pail of water?
(a) Water rushes into the bottle.
(b) Air in the bottle becomes compressed.
(c) The water level in the pail remains the same.
(d) Bubbles move up rapidly to the surface of water.
A(a) and (c) only
B(a), (b) and (d) only
C(a) and (d) only
D(a), (c) and (d) only