In 1969, Scientists Shaved Off Pieces of the Murchison Meteorite

Multiple Choice

In 1969, scientists shaved off pieces of the Murchison meteorite and found both D- and L-isomers of ten amino acids.Only L-isomers of amino acids are made by living organisms on Earth.This indicates that

A) Earth's amino acids could not have had an extraterrestrial origin.
B) the meteorite's amino acids as a whole could not have resulted from contamination by Earth organisms.
C) basic chemical building blocks of life have only formed on Earth.
D) life must have originated somewhere other than Earth.
E) life arose in many places besides Earth.