6. Health agencies collect data on the spread of diseases. Having this data allows them to better combat the spread of disease. The table shows the incidence of tuberculosis over a period of eight years. World Incidence of Tuberculosis Number Year (per 100,000 people) 2005 142 2006 139 2007 136 2008 133 2009 130 2010 127 2011 124 2012 121 What type of function BEST models this data? A. Linear B. Quadratic C. Exponential D. Logarithmic