Which of the Following Is an Example of a Learning

Which of the following is an example of a learning strategy?

A) constantly repeating a phone number to yourself in order to commit it to long-term memory
B) using the sentence "Every good boy does fine" to remember the notes of the lines on a treble staff (EGBDF)
C) looking through a chapter ahead of time, determining how to go about studying for the final, and thinking about how much time will be required for it
D) using elaborative rehearsal to master the concept of learning strategies