Whether vat is payable on catering by restaurent under kvat

i feel the hotelier need not pay tax  under 14% or 5% , they can opt for composite tax

Dear  Friends

I  have  a  doubt  on  Outdoor  catering , For  a  supply  of  foods  to  companies , can  we  charge  both  4%  VAT  and  5.15%  service  tax , pls  reply , if  4%  VAT  no  suppose  to  charge , pls  share  us  some   documents  / GO  pretaining  to  this .

Thanks  and  Regards

Asokka