पुढील विधानांपैकी कोणते अयोग्य आहे ?

The correct answer is Option D (None of the above.).

Key Points:
• Indo-US Bilateral Relations in Post-Independence Era:
• Cold War Era: Historically, Indo-US relations remained lukewarm and strained during the Cold War due to India's Non-Aligned Movement (NAM), close strategic ties with the USSR, and US military alliances with Pakistan (CENTO/SEATO).
• NPT Dispute: India's steadfast principled refusal to sign the Nuclear Non-Proliferation Treaty (NPT, 1968) on grounds of it being inherently discriminatory, followed by Pokhran-I (1974) and Pokhran-II (1998) tests, led to severe US sanctions and long-standing friction.
• Post-9/11 Transformation: Following the September 11, 2001 terrorist attacks, global strategic dynamics shifted dramatically, leading to deep counter-terrorism cooperation, removal of sanctions, the Next Steps in Strategic Partnership (NSSP), and eventually the historic 2005-2008 Civil Nuclear Agreement.
• Since statements (1), (2), and (3) are contextually recognized, 'None of the above' (Option 4) is the official answer.
• Key Takeaway: Historically strained over NPT and Cold War politics, Indo-US strategic ties underwent a major positive shift after September 11, 2001.