What is the correct way to hold the handle grips?

• With your left wrist as close to flat as possible, hold the handle grips tightly
• With your left wrist as close to flat as possible, hold the handle grips lightly but firmly
• With your right wrist as close to flat as possible, hold the handle grips tightly
• With your right wrist as close to flat as possible, hold the handle grips lightly but firmly
  Explanation:

  "Start with your right wrist as close to flat as possible. Hold the handle grips lightly but firmly"