In which of the following alternatives are the activities categorised correctly according to the advantages and disadvantages of the role of friction in them?

• A. Advantage of Friction Disadvantage of Friction Walking on a surface Writing on a blackboard  Flying of an airplane    Wearing out of a shoe Wearing out of a shoe
• B. Advantage of Friction Disadvantage of Friction Flying of an airplane    Writing on a blackboard Wearing out of a shoe Applying brake on a moving car Walking on a surface
• C. Advantage of Friction Disadvantage of Friction Applying brake on a moving car        Flying of an airplane Writing on a blackboard               Wearing out of a shoe Walking on a surface
• D. Advantage of Friction Disadvantage of Friction Applying brake on a moving car Flying of an airplane Writing on a blackboard   Walking on a surface Wearing out of a shoe