Concept:The Goods and Services Tax (GST) was introduced via the 101st Constitutional Amendment Act, 2016, not Amendment 115 or 122.
Explanation:Statement A mentions Amendment 115, which is incorrect. The correct amendment for GST is the 101st Amendment Act, 2016.
Alcohol for human consumption and five petroleum products (crude oil, petrol, diesel, ATF, natural gas) are indeed kept outside GST, but the amendment number is wrong.
Thus, Statement A is factually incorrect.
Statement B also gives the wrong amendment number (122), but correctly states that only alcohol for human use is outside GST — however, this statement is also partially inaccurate because petroleum products are also outside GST. But the primary error is the amendment number in both A and B.
Statement C: Precious metals are taxed at a special rate under GST, typically 1% on the value of the metal (not on making charges). This is generally correct as per GST Council notifications.
Statement D: Unworked or rough diamonds attract a GST rate of 0.25%, which is correct. This low rate benefits the diamond processing industry.
Therefore, the statement that is not correct is Option A because it mentions a non-existent constitutional amendment.
Answer:Option A