Tomas increased his consumption of potato chips when the price of pistachios increased. For Tomas, potato chips and pistachios are A. substitutes in consumption. B. both inferior goods. C. complements in consumption. D. both luxury goods.

A. substitutes in consumption.

Explanation:

The substitutes in consumption are products that can be replaced by others and satisfy the same desires or the same need. They respond to the buyer's need to consume a product whose price increases or can no longer purchase it.

For example, in this case, Tomas can no longer acquire pistachios (which are a snack) because increased in price, therefore the potato chips are replacing the pistachio as a snack because it is cheaper.

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