Q. Let f: A → B and g: B→C be functions where A = {1, 2, 3, 4}, B = {1, 2, 3, 4, 5}, and C = {1, 2, 3, 4, 5, 6}, f =
{(1, 2), (2, 3), (3, 2), (4, 5)} and g = {(1, 3), (2, 4), (3,
5), (4, 6), (5, 1)}. Find g o.f (2).

• (A) 3
• (B) 4
• (C) 5
• (D) 6