In the third century BC, the Greek mathematician and astronomer Eratosthenes calculated the circumference of the Earth

In the third century BC, the Greek mathematician and astronomer Eratosthenes calculated the circumference of the Earth to be 252,000 stadia. The stadion (plural: stadia) was a unit of length used in ancient Greece and the value of 1 stadion in terms of later units of length has been the subject of much debate. One belief is that 1 stadion is equivalent to 159.4 meters while another is that 1 stadion equals 185 meters. If the circumference of the Earth is now known to be 24,900 miles (where 1 mile is approximately 1.61 kilometers), depending upon the chosen equivalent measure of a stadion, the error in Eratosthenes’ calculation is the closest to

1. 1% - 16%
2. 15% - 75%
3. 84% - 99%
4. 523% - 621%
5. 98896% - 118121%

Answer: A

Source: e-GMAT