Which of the Following Exercises, Designed to Self-Stretch the Hamstrings

Multiple Choice

Which of the following exercises, designed to self-stretch the hamstrings, is the safest and utilizes the most effective stabilization?

A) Patient stands, bends forward, keeping both knees straight, and attempts to touch the nose to the thighs.
B) Patient stands on one leg, places the other leg on a table, bends forward with the back straight, and reaches toward the foot of the elevated leg.
C) Patient sits on the floor in a hurdler's position, keeps the back straight, and reaches toward the foot of the straight leg.
D) Patient sits on the floor in a long-sitting position with the knees straight and does a bilateral toe touch.