Detailed Instructions: In this task, you are given a multiple-choice question and you have to pick the correct option. Answer with option indexes (i.e., "A", "B", "C", and "D").
Q: An attraction may be magnetic if (A) two metals are placed together (B) substances find one another irresistible (C) nickel is in a metal rod (D) iron and nickel are in a bowl
A:
B