The work breakdown structure, the work packages, and the company's accounting system are tied together through the?

Thank you. Option D - Code of accounts. is a good answer.

Option D is the right choice.

the right Answer is B 

The work breakdown structure, the work packages, and the company's accounting system are tied together through the  Budgeting system

Thanks for invitation

 I Agree answers Option D 

Thank you for the invitation. My answer is B

B. Budgeting system -------------