[单选题]
The Earth moves about the Sun in and., iy; (r qktott.:et elliptical orbit. As the Earth mo yrs 0;u0;hwftu;-dk rves close to the Sun, then which of the following best describes the orbiting speed of the Earwufkr 0 -tsr0;hy;d ;uth about the Sun?
A. increases
B. decreases
C. remains constant
D. none of the above
