Which of the following is true for GCD(a,b)⋅LCM(a,b)\text{GCD}(a, b) \cdot \text{LCM}(a, b)GCD(a,b)⋅LCM(a,b)?
a+ba+ba+b
a−ba-ba−b
a⋅ba \cdot ba⋅b
a/ba/ba/b