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

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

   A)  Pause your clients' campaigns and recreate them in your manager acccount
   B)  Use your clients' sign-in information to access and manage the accounts
   C)  Link the client accounts to your My Client Center (MCC) manager account

   D)  Consolidate the 3 accounts into a new AdWords account you create