Why did Andrew Jackson describe the election of 1824 as a "corrupt bargain"?

He thought that John Marshall had been bribed to make unfair Supreme Court decisions.

He thought that South Carolina voted for John Quincy Adams in order to make it easier to secede.

He thought that the election results were falsified, and that the wrong person was placed in office.

He thought that John Quincy Adams and Henry Clay made a deal to each get the position they wanted.