The Diameter of the sun is approximately 1.39 * 10^6km. The diameter of Mercury is approximately 4.88 * 10^3 km. About how many times larger is the diameter of the sun than the diameter of Mercury?
A .28 * 10^3 times larger (I put this and got it wrong)
B. 3 * 10^3 times larger
C. 2.8 * 10^2 times larger
D. 2.8 * 10^4
Please show me how you got the answer!