Which Statement Is an Element of the Compromise Proposed by John

Which statement is an element of the compromise proposed by John Crittenden?

A) There should be a constitutional amendment to prohibit federal interference with southern slavery.
B) There should be another constitutional amendment declaring the Kansas-Nebraska Act as the guide for future slavery extension.
C) The Missouri Compromise should be repealed.
D) Southerners would have to accept the personal economic loss if one of their slaves ran away.
E) The principle of popular sovereignty should be applied to states' personal-liberty laws.