A patient is asked to face the wall, bend his waist, and let his hands hang down without support. This test is used as a screening tool for which of the following

A patient is asked to face the wall, bend his waist, and let his hands hang down without support. This test is used as a screening tool for which of the following?
a. Scoliosis
b. Lower limb asymmetry
c. Rectal prolapse