gstr 3b query

kanamarlapudi venkatesh (articles student) (113 Points)

01 August 2019  
If builder raises a sale bill of rs 15 lakhs
Whether full amount is shown under taxable supply at 12%
Or
2/3rd value of rs. 10 lakhs at 18% and balance value of rs 5lakh aa exempted supply
Which one is correct
Please help in this issue