An Asteroid in the Asteroid Belt Orbits the Sun at a Distance

An asteroid in the asteroid belt orbits the Sun at a distance of 2.8 au. Using Kepler's laws and the relation between an object's sidereal period and synodic period, determine the synodic period of this asteroid when observed from Earth.

A) 2.01 years
B) 1.27 years
C) 1.56 years
D) 4.68 years