Choose the best answer to fill in the bl…

Choose the best answer to fill in the blank.

Visitor: Excuse me. May I take some photos of the paintings in this room?

Guard: ___ The light from cameras can damage the old paint. But you're welcome to take photos in the hall outside.

Visitor: I see. Is there a guidebook with pictures of these paintings, then?

Guard: Yes, you can buy one at the shop near the main entrance.

Visitor: Great, thank you.