A (Ayumi Hamasaki EP)
Certification and sales
Table:
Region

Certification
Certified units/sales

Japan (RIAJ)[1]

Million

1,630,540[36]

* Sales figures based on certification alone.
^ Shipments figures based on certification alone.

Considering the data table for 'A (Ayumi Hamasaki EP)' titled 'Certification and sales', give a one-line statement limited to the highlighted cells and format it within the following JSON object {"answer": "YOUR ANSWER"}.