Which of the following is incorrect?

Options

A. If x is a rational number in its lowest form such that the prime factorisation of denominator is not in the form `2^(n)5^(n)` (where m and n are non-negative integers), then it has a decimal expansion which is non terminating and repeating.
B. `5+sqrt2` is an irrational number.
C. Every composite number can be expressed as a product of primes.
D. None of these