Need help please, it's urgent about stage direction in drama...Thank you.

Based on the stage directions, what does Mother Mouse do?

MOTHER MOUSE: Let no one in—no one! No one!
MISS MOUSE: No one, dear mother!

MOTHER MOUSE: I'll not be long away. Goodbye, my child.
[Starting out; stopping.]
Mind you show no one the grease-pot, child—no one! No one!

-Adapted from The Cat and the Mouse by Augusta Stevenson

a) She says, "Let no one in."
b) She starts to leave, but then she stops.
c) She exits the stage.
d) She prevents someone from entering.