योग्य कथने ओळखा.
अ. 1952 च्या राष्ट्रपतींच्या निवडणूकीत के. टी. शाह हे प्रमुख प्रतिस्पर्धी उमेदवार होते.
ब. 1969 च्या राष्ट्रपतींच्या निवडणूकीत एन. संजीवा रेड्डी हे प्रमुख प्रतिस्पर्धी उमेदवार होते.
क. 1992 च्या राष्ट्रपतींच्या निवडणूकीत टी. एन. शेषण हे प्रमुख प्रतिस्पर्धी उमेदवार होते.

The correct answer is Option A (Only A, B).

Key Points:
• Presidential Elections and Main Opponent Candidates:
• Statement A is correct: In the 1952 Presidential Election, Dr. Rajendra Prasad won with 5,07,400 votes, and his principal opponent was Prof. K. T. Shah who secured 92,827 votes.
• Statement B is correct: In the historic 1969 Presidential Election, independent candidate V. V. Giri won against the official Congress candidate Neelam Sanjiva Reddy (the main rival), following Indira Gandhi's 'conscience vote' call.
• Statement C is INCORRECT: In the 1992 Presidential Election, Dr. Shankar Dayal Sharma won against his main rival candidate George Gilbert Swell (G. G. Swell). Former CEC T. N. Seshan contested as the main opposition candidate against K. R. Narayanan in the 1997 Presidential Election (not 1992).
• Therefore, only statements A and B are correct.
• Hence, Option (1) Only A, B is the correct answer.
• Key Takeaway: K.T. Shah was rival in 1952, Neelam Sanjiva Reddy in 1969; T.N. Seshan contested the 1997 election, not 1992.