Halley's Comet Has an Elliptical Orbit Around the Sun with a Period

Multiple Choice

Halley's comet has an elliptical orbit around the Sun with a period of 76.0 years. At its closest approach (perihelion) it is 88.6 x 10¹⁰ m from the Sun and has a speed of 54.8 km/s. How far is it from the Sun at its furthest point (aphelion) ? The mass of the Sun is 2.00 × 10³⁰ kg and G = 6.67 x 10^-11 N·m²/kg².

A) 12.8 × 10¹² m
B) 32.3 × 10¹² m
C) 5.42 × 10¹² m
D) 31.4 × 10¹² m
E) 52..3 × 10¹² m