Display Webform Subject from drop down menu in Email

I've looked through the posts, but didn't see a solution to this question.

I have a webform that has a subject drop down menu. I want the value of the drop down menu to appear as the Email Subject when the admin receives an email. I only see the text boxes as options for the subject. Could someone tell me if select field can be displayed as the email subject> If so, how?

THANKS!