D'Juan had consumed a large amount of caffeine prior to his human anatomy study session with classmates. During their time together, they studied diligently and learned a lot of information. When the exam day arrived, D'Juan planned on consuming a large amount of caffeine just before taking his exam. D'Juan is applying his knowledge of _____
(A) the serial position effect.
(B) the state-dependent memory effect.
(C) the psychedelic effect.
(D) the context effect.