From This Cross Section of the Grand Canyon,the Youngest Rock

Multiple Choice

From this cross section of the Grand Canyon,the youngest rock or structure of the ones listed below is

A) Late Cenozoic basalts.
B) Mesozoic sedimentary rocks.
C) Precambrian sedimentary and igneous rocks.
D) Precambrian metamorphic rocks and granite.
E) Hurricane fault and faults along the Grand Wash Cliffs.