Venus Appears to Be Very Bright as Viewed from Earth

Multiple Choice

Venus appears to be very bright as viewed from Earth at certain times because

A) its rocky surface is shiny, like the surface of new volcanic lava.
B) it is glowing from the heat of its surface, where the temperature is 750 K.
C) it is covered by very reflective clouds.
D) even though its surface is very dark, it is relatively close to the Sun.