What should you check when you apply the brakes one at a time?

• Make sure that each one holds the moped/motorcycle when they are applied together
• Make sure that each one holds the moped/motorcycle when they are fully applied
  Explanation:

  "Try the front and rear brakes one at a time. Make sure each one holds the motorcycle or moped when it is fully applied"
• Make sure that both of them work well together
• All of the above