Match the Hindu social caste in column 1 with its description in column 2.
a Sudra
b Untouchables
c Brahmin
d Vaishya

1 Priests and learned people
2 Farmers and merchants
3 Peasants and laboxers
4 Not even considered
5 humans by many; did the
6 worst possible work and
7 were separated from
8 everyone else