According to the Principle of Faunal Succession, One Would Expect

According to the principle of faunal succession, one would expect:

A) very old rocks to contain fossils of complex organisms, while younger rocks would contain fossils of both simple and complex organisms.
B) simple organisms to be found in sedimentary rocks more often than complex organisms.
C) the success of an organism determines the abundance of its fossils.
D) very old rocks to contain fossils of only simple organisms, while younger rocks would contain fossils of both simple and complex organisms.