Read the excerpt from Act 1, Scene 5 of the play.

ROMEO: Sin from my lips? O trespass sweetly urg'd!

Give me my sin again.

(75) JULIET: You kiss by the book.

What is the meaning of "by the book" as it is used in the excerpt?

A.
according to the rules
B.
as if in a fairy tale
C.
in a strange way
D.
without permission