Introduction:
The first person that came to help the milkman was a policeman. Let's discuss in detail why the correct answer is option 'B' - Policeman.

Explanation:
- The milkman is in need of help, and out of the given options, a policeman is the most likely person to respond to such a situation.
- Policemen are responsible for maintaining law and order in the community and are trained to handle various situations, including emergencies.
- When the milkman encountered a problem or faced a difficult situation, he would have called the police for assistance.
- The policeman is equipped with the necessary skills and tools to handle different types of emergencies and provide the required help.
- In case of any threat or danger faced by the milkman, the policeman would have the authority to take appropriate action to ensure safety and maintain peace.
- The police force is usually available 24/7 to respond to emergencies and assist individuals in need.
- The other options, such as a wrestler, grocer, or ice cream man, may not be as suitable or capable of providing immediate help in this scenario.
- Wrestlers are athletes trained in combat sports and may not have the necessary expertise to handle non-sporting emergencies.
- A grocer may not have the training or equipment to handle emergencies and maintain law and order.
- An ice cream man's primary focus is selling ice cream and not necessarily equipped to handle emergencies.

Conclusion:
Considering the nature of the situation and the need for immediate help, a policeman is the most appropriate person to come to the milkman's aid. Their training, skills, and authority make them capable of handling emergencies and maintaining peace in the community.