BRAIN is a mental health charity which is wholly funded by voluntary donations. Their work focuses on providing a safe and welcoming environment for their visitors, where they can speak with qualified staff who can assist them in dealing with any problems they have. BRAIN also owns several properties throughout the UK where their visitors can live collectively, supported by BRAIN staff. BRAIN has four administrative offices where finance, human resources and marketing activities are performed. BRAIN staff are not well paid due to the financing constraints of voluntary donations. BRAIN's performance indicators are least likely to include: a. A decrease in employee turnover b. An increase in visitor satisfaction c. An increase in visitor turnover d. An increase in donations year on year