Subject :IMO Class : Class 8

Which of the following options is INCORRECT?

A The rational number 0 is the additive identity for rational numbers.

B The additive inverse of the rational number *a*/*b* is –*a*/*b* and vice-versa.

C Rational numbers are closed under the operations of subtraction, multiplication and division.

D There are infinite rational numbers between any two rational numbers.

both a and c option is false.so which to chose