Which statement is true?

The contemporary Democratic Party follows its roots back to Jefferson's Democratic-Republican Party. In the 1800s, that party separated into several groups.

The contemporary Democratic Party follows its roots back to Jefferson's Democratic-Republican Party. In the 1820s, that party separated into several groups.

The contemporary Democratic Party follows its roots back to Jefferson's Democratic-Republican Party. In the 1810s, that party separated into several groups.

The contemporary Democratic Party follows its roots back to Jefferson's Democratic-Republican Party. In the 1860s, that party separated into several groups.