Which of the Following Is a True Statement About Stabilizer

Which of the following is a true statement about stabilizer muscles?

A) They are essential in establishing a relatively firm base for the more distal joints to work from when carrying out movements.
B) They contract to unlock the joint to enable another limb or body segment to exert force and/or move.
C) They are also known as guiding muscles.
D) They are located opposite a joint or body part.