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

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