Appropriate Timing Modulation for Electrically Elicited Muscle Contractions Can Facilitate

Appropriate timing modulation for electrically elicited muscle contractions can facilitate the accomplishment of therapeutic treatment goals. Which of the following would be considered a more appropriate form of documentation for the on-off ratio of electrical stimulation, and why?

A) 1:5 for 15 minutes since both the ratio and treatment time are included.
B) 10 contractions in 15 minutes since both the number of contractions and treatment time are included.
C) 2 seconds on, 10 seconds off or 1:5 for 15 minutes since contraction times, relaxation times, and the treatment times are all included.
D) 20% duty factor for 15 minutes since the percentage of overall on time and the treatment time is included.