Neco Model Questions Vol1 2019 Geography Question 50

The following data describe three zones in a region:\n\n| Zone | Altitude (m) | Rainfall (mm yr\(^{-1}\)) | Mean temperature (°C) |\n|------|--------------|--------------------------|-----------------------|\n| A | 200 | 1 200 | 28 |\n| B | 800 | 800 | 22 |\n| C | 1 500 | 1 500 | 16 |\n\nThe Agricultural Suitability Index (ASI) for a zone is calculated as\n\[\text{ASI}= \frac{\text{Rainfall (mm)}}{100}\; -\; \frac{\text{Altitude (m)}}{200}\; +\; (30-\text{Mean temperature (°C)}) .\]\nCompute the ASI for each zone, identify the zone with the highest ASI, and rank the zones from most to least suitable.