Q. Which of the following pairs represent sets of complementary goods?

1. Printers and Ink Cartridges
2. Tea and Sugar
3. Mobile Phones and SIM cards
4. Tea and Coffee

Select the correct option from the codes below:
Answer: Only 1, 2 and 3
Notes: Printers and ink cartridges, tea and sugar, and mobile phones and SIM cards are complementary goods, as they are used together and the demand for one increases with the other. Tea and coffee are substitutes, not complements, as they are consumed in place of each other, not together.