The Table Below Is a Data Set Corresponding to the Times

Multiple Choice

The table below is a data set corresponding to the times achieved every 10 meters by Carl Lewis in the 100 meter final of the World Championships in Rome in 1987.
Over which of the following distance intervals was Carl Lewis's average speed the fastest?

A) from 60 meters to 90 meters
B) from 70 meters to 80 meters
C) from 20 meters to 40 meters
D) from 10 meters to 40 meters