According to the principle of superposition, which statement is true about the sediment layers shown here?Required to answer. Single choice.
(20 Points)

A. Layer 2 is young relative to layer 3.
B. Layer 3 is young relative to layers 1, 2, and 4.
C. Layer 4 is old relative to layers 1 and 2.
D. Layer 2 is old relative to layers 3 and 4.
whoever gets it right gets 10pts