Question: What is the correct way to call a function?

1. `get_max_num([57, 99, 31, 18])`
2. `call.(get_max_num)`
3. `def get_max_num([57, 99, 31, 18])`
4. `call.get_max_num([57, 99, 31, 18])`

Answer: The correct answer of the above question is Option A:`get_max_num([57, 99, 31, 18])`