Table:
text: Indian general election in Tamil Nadu, 1977
List of Elected MPs
List of Elected MPs
Constituency Winner Party Margin Runner_up_a Party_a
Madras North A. V. P. Asaithambi DMK 45103 K. Manoharan ADMK
Madras Central P. Ramachandran NCO 73411 K. Raja Mohammad ADMK
Madras South R. Venkataraman INC 14829 Murasoli Maran DMK
Sriperumbudur S. Jaganathan ADMK 45932 T. P. Elumalai NCO
Chengalpattu R. Mohanarangam ADMK 35639 Era. Sezhiyan DMK
Arakkonam O. V. Alagesa Mudaliar INC 57864 N. Veeraswamy DMK
Vellore V. Dhandayuthapani NCO 3161 Abdul Samad IND
Tiruppattur C. N. Viswanathan ADMK 98666 C. K. Chinnaraj Gounder DMK
Vandavasi Venugopal Gounder ADMK 81132 Durai Murugan DMK
Tindivanam M. R. Lakshmi Narayanan INC 49485 V. Krishnamoorthy DMK

Question: Among the 1977 Indian General Elections in Tamil Nadu, name the largest margin for the NCO party and p. Ramachandran won?

Question: Name the party a for Sriperumbudur in the Indian general election in Tamil Nadu, 1977?