Which of the following statements can you not conclude with any certainty is true based off the data depicted in Figure 5.3

A) There has been an increase in the number of unique sightings of adult females grizzly bears with cubs from 1990 to 2005
B) There has been an increase in the number of male grizzly bears
C) There has been an increase in the number of unique sightings of adult female grizzly bears with cubs from 1960 to 1975 and from 2005 to 2012.
D) Net recruitment has increased 5 fold since 1975 to 2005