Which notification no. to choose

Friends

We are registered under 'Consulting Engineer' taxable category of service. We export service. Export of service is exempted from service tax liability ambit.

In the ST3 return, we need to mention the notification no. from the list given there in drop down menu against the point : Has the assessee availed the benefit of any exemption notification , if yes, furnish.

Can you advise which one to choose therefrom as notification 9/2005 dated 3/3/2005 does not find a place there.

Regards,