Which of the following would cause a leftward shift of the supply curve for computers? A. an increase in the price of printed circuit boards used to build computers B. a decrease in the price of electricity C. an increase in incomes of consumers D. decrease in quantity supplied E. increase in supply

The answer is A.

Explanation:

All other things being equal, an increase in the cost of production of a product will decrease the units of the product being reduced and this reduction in supply shifts the supply curve to left while a decrease in the cost of production will increase the units of the product being produced and this shifts the supply curve to the right.

Printed circuit boards is one of the materials used to build computers and since the price has increased, the cost of producing computer also increases and this will make the producers to produce less, shifting the supply curve to the left.

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