Removing dropdown value

Im wanting to remove a value in a dropdown list based on choices made on the form.  Im not having any luck using the following code:

$("#WorkOrderType option[value='Preventative Maintenance']").remove();

Im assuming the issue is in how im calling the form field/dropdown list.  Looking at the code of the rendered form, the dropdown list id is a different value (a very long one at that).  I assume I need to call the fd.form function to get the correct form field.