Does the Term "Mandatory Spending" Mean That Spending Must Go

Multiple Choice

Does the term "mandatory spending" mean that spending must go on forever?

A) Yes, once appropriated, spending is indefinite.
B) No, once appropriated, spending is for the life of the program only or until it changes.
C) Yes, the laws which authorized this spending cannot be changed.
D) Yes, Congress has no right to change these spending programs.