100% Discount on Nil Rated sales

A sold Goods to B(Temple) for an amount of 90000/-.Here the goods are unbranded Honey, it is Nil rated. A also gave 100% discount to B. Now the invoice value is 0/-(90000-100%). When filling GSTR-1 how much shall A need to be Reported? Whether 

1. 0
2. 90000