WAEC Geography 1997 Question 22

The mean annual range of temperature of a place is obtained by

1. A.adding the monthly mean temperatures for one year and dividing them by 12
2. B.adding the lowest temperature for one year to the highest for the year
3. C.adding the mean daily temperatures for one year and dividing by 365
4. D.subtracting the lowest mean daily temperature from the highest mean daily temperature for the year
5. E.subtracting the lowest mean monthly temperature from the highest mean monthly temperature for the year