Which of the following is true concerning planet Earth? 

A) If Earth were the same distance from the Sun as Venus, it would be too cold to have liquid water. 
B) If Earth were the same distance from the Sun as Venus, water would not be able to stay in liquid form.
C) If Earth were the same distance from the Sun as Mars, it would be too hot to have liquid water. 
D) If Earth were the same distance from the Sun as Mars, it would still be able to have liquid water.