What is basic mean while calculating hra

Solomon (Owner) (41 Points)

08 February 2019  

A. Basis salary for the year is 600000

B. DA for the year is 50000

C. DA arrear for the year is 5000

D. Earned Leave Surrender 40000

So while calculating HRA. Which part is considered as 10% of A/B/C/D is BASIC. Please provide solution in detail. Thanks in advance for your time.