Describe the largest set S on which it is correct to say that f is continuous for ln (x2 y2).

A) S = {(x,y) | x ≠ 0, y ≠ 0}
B) S={(x,y) ∣ x>0,y>0}
C) S={(x,y) ∣ x≥0,y≥0}
D) S = {(x,y) | x ≠ 0}