Imo A
If the vending machine is not placed in cafeteria then students will not drink more soda and will be fit .
Option D comes close but has an inherent flaw .
If suppose the students bring soda from home and cafeteria does not have soda vending machine then they are going to consume less soda .
If they if the vending machine is placed in cafeteria then will still consume more soda other than the soda that they brought from home .
If the vending machine is not placed in cafeteria then students will not drink more soda and will be fit .
Option D comes close but has an inherent flaw .
If suppose the students bring soda from home and cafeteria does not have soda vending machine then they are going to consume less soda .
If they if the vending machine is placed in cafeteria then will still consume more soda other than the soda that they brought from home .





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