What Does It Mean to Treat Humanity as an End

Multiple Choice

What does it mean to treat humanity as an end in itself?

A) That we should treat human beings as imposing limits on the maxims that we choose for ourselves.
B) That we should treat people's capacity for rational action as something that has value in itself and deserves to be honored, promoted, and protected.
C) That we should treat people as if they have the capacity for rational decision making, even when they don't.
D) That we should promote other people's interests without asking why those interests are valuable.