Steve went to his favorite hamburger restaurant with $3, expecting to buy a $2 hamburger and a $1 soda. When he arrived, he discovered that hamburgers were on sale for $1 each, so Steve bought two hamburgers and a soda. Steve's response to the decrease in the price of hamburgers is best explained byA. the substitution effect.
B. the income effect.
C. the price effect.
D. a rightward shift in the demand curve for hamburgers.

D. a rightward shift in the demand curve for hamburgers.

Explanation:

A rightward shift in demand curve refers to an increase in demand for a product. The implication is that a larger quantity is demanded at each market price.

In the scenario, at the steve demanded more hamburgers at the given price without increase in income or increase in the price of a related good; hence there is no income or substitution effect

The demand of a product can shift due to certain reasons one of which is consumer expectations

Steve expected the price to be $2 but it was $1 hence he had to demand for more hamburgers.

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