Elevator doorS ARE wide open.

Hi!

I read the following script in a TOEIC book:

"The elevator doors are wide open." ((Complete Guide to the TOEIC Test, 3rd Edition, by Bruce Rogers))

The above sentence was about a picture, and I'll let you know almost the same picture (as the original one): http://images.google.co.kr/imglanding?q=elevator%20doors%20are%20wide%20open&imgurl=http://www.synthstuff.com/mt/archives/elevator_floor.jpg&imgrefurl=http://www.synthstuff.com/mt/archives/2006_10.html&usg=__gfZ_EV-8j-PuW_m_-F613aVkiws=&h=450&w=300&sz=15&hl=ko&um=1&itbs=1&tbnid=l7sGv4dvyAHfaM:&tbnh=127&tbnw=85&prev=/images%3Fq%3Delevator%2Bdoors%2Bare%2Bwide%2Bopen%26start%3D280%26um%3D1%26hl%3Dko%26lr%3D%26newwindow%3D1%26sa%3DN%26complete%3D1%26ndsp%3D20%26tbs%3Disch:1&start=284&um=1&lr=&newwindow=1&sa=N&complete=1&ndsp=20&tbs=isch:1#tbnid=l7sGv4dvyAHfaM&start=288

What do you think? Can you say the above sentence for the picture?

I don't think you can say it because there is only ONE elevator and the door should be ONE.

Am I wrong?

Thanks in advance.