Explanation:

All statements are correct.

• The IIBX will be a gateway for bullion imports into India, where all bullion imports for domestic consumption shall be channelized through the exchange. 
• In addition to providing a trading avenue to various participants, a bullion exchange will also offer the advantages of price discovery, transparency in disclosures, guaranteed centralised clearing and assurance of quality. 
• A bullion exchange, apart from providing standardisation and transparent mechanism, will also be an important step towards financialization of bullion-based products.

Hence option 4th is correct.