The fact that Mercury and Venus are never seen high in the sky at night?

NerdGirl

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(these are the few question left in my homework that I can't find in the book, or google!)

The fact that Mercury and Venus are never seen high in the sky at night

a. was explained by a general rule for all planets in the Copernican theory, but required a special exception in the Ptolemaic theory.
b. Was explained by a general rule for all planets in the Ptolemaic theory, but required a special exception in the Copernican theory.
c. was explained by a general rule for all planets in both the Copernican and Ptolemaic theories
d. required a special exception in both the Copernican and Ptolemaic theories
 
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