For positive integers a>ba > ba>b, which relationship is always true?
gcd(a,b)=gcd(b,a−b)\gcd(a, b) = \gcd(b, a-b)gcd(a,b)=gcd(b,a−b)
gcd(a,b)=gcd(a,a−b)\gcd(a, b) = \gcd(a, a-b)gcd(a,b)=gcd(a,a−b)
gcd(a,b)>gcd(a,a−b)\gcd(a, b) > \gcd(a, a-b)gcd(a,b)>gcd(a,a−b)
They are always coprime