Cold storage registration under service tax

CAN ANYONE PLEASE TELL ME THAT UNDER WHICH CATEGORY SHOULD I REGISTER A COLD STORAGE SERVICE FOR THE PURPOSES OF SERVICE TAX REGISTRATION. THE CATEGORY IS NOT SPECIFICALLY AVAILABLE IN THE CATEGORY OF SERVICES PROVIDED AT THE ACES WEBSITE.

IN MY VIEW  THE CATEGORY COULD BE EITHER 'STORAGE & WAREHOUSING' OR 'WORKS CONTRACT'

PLEASE HELP OUT ON THE SAID ISSUE, PRETTY URGENT

THANKS IN ADVANCE