Which one among the following is most appropriate for coprimes?

• A. Numbers having more than two factors are called coprimes.
• B. Two numbers are called coprimes, if there is no common factor other than 1, between these two numbers.
• C. Two numbers are called coprimes, if there is no common factor other than 2, between these two numbers.
• D. Pair of prime numbers are called coprimes.
• E. None of these