Which of These Statements Best Describes the Law of Superposition

Multiple Choice

Which of these statements best describes the law of superposition?

A) Sediments will be deposited in horizontal layers.
B) In any undisturbed sedimentary deposits, each layer is younger than the layer beneath it.
C) In any undisturbed sedimentary deposits, each layer is older than the layer beneath it.
D) The uppermost sediments are the most important for archaeological analysis.