Given a,b>0a, b > 0a,b>0 such that GCD(a,b)=1\text{GCD}(a, b) = 1GCD(a,b)=1. What is GCD(a+b,a2−ab+b2)\text{GCD}(a+b, a^2-ab+b^2)GCD(a+b,a2−ab+b2)?
111 or 333
111 only
a+ba+ba+b
a2+b2a^2+b^2a2+b2