The Earth's Orbit Has a Mean Radius of 1

Multiple Choice

The Earth's orbit has a mean radius of 1.5 × 10⁸ km. Over a six-month period, the apparent position of a particular star varies by 0.00014° due to parallax. How distant is the star, in km?

A) 1.2 × 10¹¹ km
B) 1.2 × 10¹⁴ km
C) 1.2 × 10¹⁷ km
D) 1.2 × 10²⁰ km
E) 1.2 × 10²³ km