Correct option is B
The correct answer is: (b) Indra Sharma v. V.K.V. Sharma
Explanation
In Indra Sharma v. V.K.V. Sharma (2013) 15 SCC 755, the Supreme Court specifically held that "not all live-in relationships are in the nature of marriage".
The Apex Court laid down elaborate guidelines and identified 8 key tests/guidelines to determine whether a live-in relationship falls within the ambit of a "relationship in the nature of marriage" under Section 2(f) of the Protection of Women from Domestic Violence Act, 2005 (DV Act).
(Note: While D. Velusamy v. D. Patchaiammal (2010) laid down the basic conditions for live-in relationships under the DV Act, it was in Indra Sharma (2013) that the Court exhaustively categorized various types of live-in relationships and explicitly ruled that not all such relationships amount to a relationship in the nature of marriage).