Which amendment act modified the procedure of election of the Vice-President by providing for an electoral college, thereby dispensing with the earlier requirement of a joint meeting of members of both houses of parliament assembled for the said purpose?
1) Seventh Constitutional Amendment Act, 1956
2) Ninth Constitutional Amendment Act, 1960
3) Eleventh Constitutional Amendment Act, 1961
4) Thirteenth Constitutional Amendment Act, 1962
3) Eleventh Constitutional Amendment Act, 1961