Which of the Following Accurately Describes Earth's Distance from the Sun

Which of the following accurately describes Earth's distance from the Sun?

A) the Earth-Sun distance averages 150 million kilometers.
B) it takes light an average of 8 hours and 20 seconds to travel from the Sun to Earth.
C) Earth is closer to the Sun in July (perihelion) and farther away in January (aphelion) .
D) it varies by up to 50% throughout its orbit
E) it remains constant through time.