Which of the following statements best illustrates a difference between the advantages of fertility-awareness methods and barrier methods of contraception?

A) Fertility-awareness methods rely on tracking menstrual cycles, while barrier methods physically prevent sperm from reaching the egg.
B) Fertility-awareness methods are more effective in preventing sexually transmitted infections (STIs) compared to barrier methods.
C) Barrier methods can be used spontaneously without advance planning, while fertility-awareness methods require regular monitoring and awareness of the menstrual cycle.
D) Fertility-awareness methods are more convenient and less intrusive than barrier methods in terms of insertion and removal.