Which line in the script is the setting?

A.
[Gwendolen and Cecily are at the window, looking out into the garden.]

B.
Gwendolen. The fact that they did not follow us at once into the house, as anyone else would have done, seems to me to show that they have some sense of shame left.

C.
Act III

D.
The Importance of Being Earnest

E.
Morning-room at the Manor House.

The line that indicates the setting is E. "Morning-room at the Manor House."

The line in the script that indicates the setting is:

E. Morning-room at the Manor House.