The correct option is A 99100
The fraction whose numerator is less than the denominator is called a proper fraction.
99100:Numerator < Denominator
Hence, it is a Proper Fraction.
10099: Numerator > Denominator
Hence, it is not a Proper Fraction.
101100: Numerator > Denominator
Hence, it is not a Proper Fraction.
102100:Numerator > Denominator
Hence, it is not a Proper Fraction.
Option (a) is correct.