I have defined a s content type with a checkbox field in Drupal 7. The idea is that when a user choose option A, the system do something after creation of the content, say, send an email to the webmaster and if the user choose option B or C while creating the content, the system do nothing. 

I've had difficulty to expose the select field result to rules' condition and I'm even not sure whether it is possible, so appreciate your help.