Among the following not a perfect cube is

Perfect cube: A natural number is said to be a perfect cube if it is the cube of some natural number.

Option (A): $125=5^3$ It is a  perfect cube

Option (B): $196={14}^2$ we con not write as perfect cube

Option (C): $1000={10}^3$ It is a perfect cube

Option (D): $3375={15}^3$ It is a perfect cube

$\therefore$ 196 is not perfect cube