Visualize (Or Draw) Five, Horizontal, Sedimentary Strata as Exposed in a Cliff

Visualize (or draw) five, horizontal, sedimentary strata as exposed in a cliff or canyon wall identified by consecutive numbers, 1 being the lowest bed and 5 being the highest. Which of the following statements concerning the strata are true?

A) bed 3 is older than beds 2 and 4
B) bed 4 is older than bed 2
C) bed 5 is the oldest
D) beds 1 and 3 are older than bed 4