Barry is always searching information about wine. He reads Wine Spectator every month, has several books related to wine, visits wine-related Web sites frequently, and has visited several wine regions throughout the world. While he purchases wine frequently, he does not conduct this information search for just that reason. He just enjoys learning about wine. For Barry, his search for information about wine is an _____.
A. internal search
B. ongoing search
C. eternal search
D. continuous search
E. perpetual search