61.林女士,處於待產活動期,station 0,為枕後位,有關促進待產時胎位改變的姿勢,下列何者最不適宜?(A)手膝跪姿(hands and knees position)(B)開放性膝胸跪姿(open knee-chest position)(C)弓箭姿(lunge position)(D)開膝式的蹲姿(knee-open squat)