The Age of Earth CANNOT Be Reliably Estimated from Sediment

Multiple Choice

The age of Earth CANNOT be reliably estimated from sediment thicknesses because ____________.

A) sedimentation rates are not likely to remain constant at any one locality over all of Earth's history
B) sedimentary rocks can be metamorphosed or melted
C) locally,much of Earth's history is represented by unconformities between strata rather than the strata themselves
D) All of the above are correct.