A planet orbits the sun in an elliptical path as shown in the figure. Let `v_(p) " and " v_(A)` be spped of the planet when at perohelion and aphelion respectively. Which of the following relations is correct ?
A. `(r_(p))/(r_(A))=(v_(A))/(v_(p))`
B. `(r_(p))/(r_(A))=(v_(p))/(v_(A))`
C. `(r_(p))/(r_(A))=sqrt((v_(p))/(v_(A)))`
D. `(r_(p))/(r_(A))=sqrt((v_(A))/(v_(p)))`