Section 44ADA for pensioner

My client is a pensioner and also working as a contract employee. Pension income comes under 'income from salaries' while contract payment comes under 'Income from Profession' for which Presumptive Scheme of taxation is applicable.He is asking about the eligibility for 50% deduction towards expense in respect of contract receipt as per Section 44 ADA? Which Income Tax Return Form is applicable in this case