Population 60 50 40 30 20 10 Year 2001 2002 2004 9007 2003 2005 2008 2009 2010 2007 The line graph shows how the population of parrots on an island declined over the ten year period from 2001 to 2010. Measurements were taken at the beginning of each year. What was the total decline in the parrot population over that time? A 14 B 42 C 46 D 60