References: Kim Heldman, CompTIA Project+ Study Guide, 2nd Edition, Sybex, Indianapolis, 2017, p. 133 https://books.google.co.za/books?id=evR0gPFBHJ4C&pg=PA128&lpg=PA128&dq=complete+a+project+sooner+-+update+WBS&source=bl&ots=O650UKpUEK&sig=mlexbBmFJKkAuXuftqO2YjLLOgo&hl=en&sa=X&ved=0ahUKEwi8uJXIj_DXAhUKuRQKHW3fDKAQ6AEIMTAC#v=onepage&q=complete%20a%20project%20sooner%20-%20update%20WBS&f=false