Which ITR Form

DEVENDER THAKUR (Accountant) (589 Points)

29 March 2018  
A person has earned commission from the Lic Business Rs 90000/- for the f.y 2015-16 plus he has also earned income from Salary Rs 180000/-. He filed the Itr in Form ITR 4S. It was declared invalid by the Ao. Now msg comes that invalid return can be corrected before 31.3.18
Now which form should be filed. Plz
guide.