单项选择题

Galileo, with his telescope, helped prove the validity of ____ model against ____ model.

A.Copernicus’s geocentric; Aristotle’s heliocentric
B.Aristotle’s heliocentric; Plato’s geocentric
C.Plato’s geocentric; Aristotle’s heliocentric
D.Copernicus’s heliocentric; Aristotle’s geocentric
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