Expected DA from January 2018 - DA would be 3% ?

Expected DA from January 2018 -  DA would be 3% ?

We have calculated the expected DA from January 2018 with different Scenarios, but most of the calculations comes around only 3 percent increase, lets us see the scenarios here

Scenario 1
In case the AICPIN value increase by 3 point for next FIVE months (example AUG 288, SEP 291, OCT 294, NOV 297, DEC 300,), then DA would be 3% (8.81-5 =3)

Scenario 2
In case the AICPIN value increase by 3 point for next FIVE months (example AUG 289, SEP 293, OCT 297, NOV 301, DEC 305) then DA would be 4% (9.28-5 =4)