When Do You Say “Can I help you?” in Chinese?

Beginner Level 初级 (chūjí)

Can you guess who most likely said “我能帮你吗 (Wǒ néng bāng nǐ ma?)?” A. The little boy who broke the window. B. The man who saw another person in trouble. C. The old lady who found a 100 Yuan bill on …