Which One of the Following Students Is Elaborating as He

Which one of the following students is elaborating as he takes notes in class?

A) While his math teacher demonstrates a mathematical procedure on the chalkboard, Ed writes "Meet Pat after school" in the margin of his notebook.
B) Jason writes down every word his science teacher says, hoping that it will all make sense when he reads it later.
C) In his Spanish class, Hugh writes each new vocabulary word in his notebook five times to help him remember it.
D) In science, Frank is taking notes about how water expands when it freezes and adds, "That's why our fish tank broke when I left it outside last winter."