The right option is; B. the FITT formula
The FITT formula is the guidelines your workout should follow.
The FITT Formula is a principle that describes four specific characteristics of exercise that can make workouts more effective and successful. These characteristics include frequency, intensity, time, and type (FITT). Frequency describes how often a person exercises, intensity describes how hard a person exercises, time describes the period of time used for the exercise, and types describes the type of exercise that is chosen