Option A.
Step-by-step explanation:
Rational numbers -
- Numbers that can be written as fraction of two whole numbers.
- They can be positive, negative or zero.
- They are numbers that can be written as fractions.
- So, options B and C are examples of rational numbers.
Vinculum or Bar numbers -
- These numbers are repeating decimals.
- They are written with a line or a bar on top of the repeating numbers.
- Bar numbers are irrational numbers.
- So, option A is not a rational number.
