Documentation Identification Number (DIN) System

Current context: The Documentation Identification Number (DIN) system of Central Board of Indirect Taxes and Customs (CBIC) will come into existence from 8th November 2019.

• The step is aimed at bringing transparency and accountability in the indirect tax administration through the widespread use of information technology.
• The step is taken as per the direction of Union Minister for Finance and Corporate Affairs Nirmala Sitharaman.
• Now the CBIC communication will have to have a Documentation Identification Number and No communication would be issued without DIN.
• The DIN system is already executed in the direct tax administration.
• Any communication from GST or Custom or Central Excise department without a computer-generated DIN would be treated as invalid.
• The DIN system will provide the taxpayer with a digital facility to verify any communications.

Question: 

Q.1 The DIN system is recently in news for bringing transparency and accountability in the indirect tax administration. It stands for_____?
a. Departmental Identification Number
b. Direct Identification Number
c. Documentation Identification Number
d. Divisional Identification Number