After the constitution came into force, which two persons were appointed for the first time by the President to the post of Election Commissioner to assist the Chief Election Commissioner and when?

After the constitution came into force, which two persons were appoint

1.	After the constitution came into force, which two persons were appointed for the first time by the President to the post of Election Commissioner to assist the Chief Election Commissioner and when?
A.	SS Dhanoa, 1989
B.	VS Sehgal, 1989
C.	RP Bhalla, 1998
D.	both 1 and 2
Answer» E.