The sun is 9.3 x 10^7 miles from Earth. The closest star, Proxima Centauri, is 1.0x10^4 times farther
 from Earth than the sun. What is the approximate distance from Earth to Proxima Centauri?
 A.9.3 x 10³ miles
 B.9.3 x 10^4miles
 c.9.3 x 10¹¹ miles
 D.9.301 x 10^7 miles