In what method of periodization might an athlete perform five sets of four repetitions at 85% of 1RM on the first day of the week, five sets of four repetitions at 80% of 1RM on the next training day, and five sets of four repetitions at 70% of 1RM on the last training day of the week?
a. undulating periodization
b. nonlinear periodization
c. daily undulating periodization
d. traditional periodization