In the course of his campaign against Stephen Douglas in 1858, Abraham Lincoln declared all of the ...

In the course of his campaign against Stephen Douglas in 1858, Abraham Lincoln declared all of the following except
 
  A) Congress had no constitutional authority to abolish slavery in the South.
  B) Social and political equality between blacks and whites was not desirable.
  C) The Dred Scott decision rendered popular sovereignty as thin as soup boiled from the shadow of a pigeon that had starved to death.
  D) This nation cannot exist permanently half slave and half free.
  E) The best way to preserve the Union was to ensure that slavery was legal in all states, North and South.