Which of the following statements can be inferred from the data I. The greatest increase in total yearly revenue over any 10-year period shown was $7 million. II. In each of the 10-year periods shown in which total yearly revenue increased, the average number of production hours per widget decreased. III. From 1980 to 1990, fewer widgets were sold because each widget took longer to produce.

A． provide additional support for the unique feeding habits of bears
B． discount the theory regarding a bear’s ability to remain well fed
C． evaluate the dispute between advocates of differing theories regarding bear behavior
D． challenge recent research on the way in which bears secure food
E． suggest further investigation of human interaction with bears