The sharp tone of the two indicated they were having a fight . He loved observing human - human interaction so he decided to pay attention to what was said ; besides , the boy 's voice was irresistible . " I see no reason why my dog ca n't stay here with me ; it 's a completely harmless pet and never attacked anybody . I ca n't just leave him outside in the cold , he 'll probably feel lonely ! "
What is the most likely reason the fight started ?
Pick the best answer from the following options:
A. None of the above choices .
B. It appears they are arguing over whether or not a dog can stay at their place .
C. They started fighting because he did not pay attention when he should have .
D. They started fighting because the dog was left out in the cold .


B