Your VP of Sales thinks SLAs are unnecessary and does not support you taking the time to create one for your Marketing and Sales teams. How can you explain the benefit of an SLA in order to convince your VP of Sales it’s worth creating one?

Your VP of Sales thinks SLAs are unnecessary and does not support you taking the time to create one for your Marketing and Sales teams. How can you explain the benefit of an SLA in order to convince your VP of Sales it’s worth creating one?
  A)  An SLA will help align our teams’ goals around our same end goal of revenue.
  B)  An SLA will help us communicate transparently how our teams are supporting the other and contributing to the bottom line.
  C)  An SLA will allow us to monitor on a daily basis how we’re tracking towards our goals so we can adjust as needed.
  D)  All of the above