You signed 3 new clients, each with an existing AdWords account. What’s the best way to manage these accounts

You signed 3 new clients, each with an existing AdWords account. What’s the best way to manage these accounts?

• Pause your clients’ campaigns and recreate them in your manager acccount
• Use your clients’ sign-in information to access and manage the accounts
• Link the client accounts to your My Client Center (MCC) manager account
• Consolidate the 3 accounts into a new AdWords account you create

Correct answer is: Link the client accounts to your My Client Center (MCC) manager account

Explanation: If you’re an agency or someone who manages multiple AdWords accounts, a manager account is a powerful tool that could save you time. 

A manager account is an AdWords account that lets you easily view and manage multiple AdWords accounts — including other manager accounts — from a single location.
Read more here: https://support.google.com/partners/answer/6139186?hl=en