Which of the following would shift the supply curve for smartphones to the right?

A) an increase in the price of a substitute in production
B) an increase in consumer income (assuming that all smartphones are normal goods)
C) a decrease in the number of firms that produce smartphones
D) a decrease in the price of an input used to produce smartphones

The correct answer is B

Explanation:

Supply curve is the curve which is a graphic representation of the relationship among the quantity of the product and the price of the product, which the seller is willing to supply.

Supply curve on the right means increase in the supply of the product in the market.

So, the shift to the supply curve to the right for smartphones, will result from increase in the consumer income, as the income of customer rises, will result in outwards shift (right) and when the goods are normal goods.

the second one is 3mm

because i just took the test

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-lavira : )