HRA Deduction

Kamal (Student) (65 Points)

22 July 2019  
Sir, A person has worked in two companies namely A and B for 6 Months Each.
April to Sep in A
Oct to Mar in B

He has Received HRA allowance from both the companies, however the deduction has only been shown by Company B in their form 16 and the company A has not showed any deductions under the head.

Can we claim the amount paid by Company A as HRA while filing ITR 1, is there any supporting documents needed for the same claim ? (note : the companys salary slip has the HRA component)