And it<br/>is they, not the rats, who bring the rat race. Here rat race is a<br/>term used to describe a way of life in which people are caught up ina fiercely competitive struggle for wealth or power. ______ <br/>Unit11<br/>The Story of an Eyewitness

Which of the following is an example of discrete data from a primary source？（ ） A: A colleague's measurement of the distance from the office to the head office B: A report in a newspaper giving retail sales for the month C: An eyewitness account of the number of customers D: A website showing the average height for children aged seven