The Relatively Small Number of Impact Craters and the near Absence

The relatively small number of impact craters and the near absence of small craters on thesurface of Venus are thought to be a result of:

A) the soft and resilient nature of the Venusian surface.
B) the thick Venusian atmosphere.
C) the position of Venus in the solar system-not many meteoroids cross Venus's orbit.
D) Venus's lack of a satellite.
E) the ancient oceans that once existed on Venus.