While the Precambrian Represents 88% of Earth's History, It Is

While the Precambrian represents 88% of Earth's history, it is not divided into periods or epochs like the Phanerozoic because there ___________.

A) were no multi- cellular organisms nor hard- bodied fauna to leave much of a fossil record
B) are few resources in Precambrian rocks and few geologists take an interest in them
C) are few remaining Precambrian rocks to correlate or divide due to active tectonics
D) are no Precambrian sedimentary rocks to use for internal divisions