Which two statements are MAIN ideas of the article?

1. Reform groups were angry about the working conditions in factories.

2. Reform movements started in Boston, Massachusetts, with an effort to end slavery.

3. Reform groups fought for changes to improve the American way of life.

4. Reform movements transformed many areas of society in the 1800s.

A
1 and 2

B
1 and 4

C
2 and 3

D
3 and 4