Which of the following Directive Principles did not form part of the original Constitution and were added through constitutional amendments ?
a. To minimise inequality in income.
b. To protect and improve the environment and to safeguard forests and wildlife.
c. Equal pay for equal work for both men and women.
d. To ensure equal justice and free legal aid to the poor.
e. To secure adequate means of livelihood for all citizens.
1. a, b and c
2. b, c and d
3. c, d and e
4. a, b and d