WAEC Geography 2005 Question 11

Use the table for a station: Month J F M A M J J A S O N D; Temperature (°C) 22, 22, 23, 24, 28, 30, 31, 31, 29, 30, 24, 24; Rainfall (mm) 32.5, 52.0, 132, 225, 270, 310, 354, 416, 221, 31.0, 11, 02.1. The annual range of temperature for the station is

1. A.6°C
2. B.9°C
3. C.11°C
4. D.12°C