试述模具型腔冷挤压的基本特点及其适用场合？

Woman: I want to try something new in the project. What’s your opinion
Man: Well, I prefer to go by the book. At least it is safer, isn’t it
Question: What does the man suggest

A．Strictly obeying the established rules.
B．Trying something new from the book.
C．Testing a new but safer method.
D．Learning a new method through practice.