Study the given table and answer the question that follows.

The table shows the number of customers for different services in different cities.

In which service is the average number of customers per city the highest?

A

Average number of customer of A = $\frac{250 + 175 + 350}{3}$

= 258.33

Average number of customer of B = $\frac{220 + 190 + 240}{3}$

= 216.67

Average number of customer of C = $\frac{260 + 200 + 270}{3}$

= 243.33

Average number of customer of D = $\frac{245 + 185 + 330}{3}$

= 253.33

So , A has highest number of customer .