Which Item Best Describes the Concept of Sensate Focus

Which item best describes the concept of sensate focus?

A) Devoting one day to each sense;observing and studying how each contributes to the erotic experience.
B) Giving and receiving pleasure to each other without a sexual or coital goal.
C) Slowing down the pace of intercourse so that each step is fully experienced.
D) Expanding the repertoire of foreplay activities before penetration.