Answer:
The correct option is B.
Explanation:
The volume of a cuboid is

Where. l is length, b is breadth and h is height.
The length, breadth and height of the aquarium are 50 cm, 28 cm and 33 cm.
The length, breadth and height of the aquarium without water in it are 50 cm, 28 cm and 10 cm.
The volume of the portion of the aquarium without water in it is


The volume of the portion of the aquarium without water in it is 14000 cm³. Therefore correct option is B.