Which Was a Limitation of the Miller-Urey Experiments in the 1950s

Multiple Choice

Which was a limitation of the Miller-Urey experiments in the 1950s?

A) The experiments synthesized both d- and l-isomers of amino acids, but the amino acids in living things are always l-isomers.
B) The experimenters made assumptions about Earth's early atmosphere that were later found to be inaccurate.
C) DNA is not self-catalytic.
D) In living organisms today, peptide linkages are catalyzed by ribozymes.
E) The hot temperatures of the experiments denatured some of the proteins that were synthesized.