[aside]
[weeping]
[embraces and kisses Lomov]
[teasing]
[faints]
[clutches at his heart]

How do stage directions such as these from The Proposal enhance a play?

A. Stage directions help the reader envision what the characters are wearing.
B. Stage directions give insight into the character's personalities and relationships.
C. Stage directions tell the audience what the characters are truly thinking.
D. Stage directions indicate what the actors should say to one another.