A. Yogah karmasu kaushalam (Skill in action is yoga) and C. Samatvam yog uchyate (Equanimity is yoga) are famous teachings from the Bhagavadgeeta.
B. Yogashchittivrittinirodhah (Yoga is the cessation of mental fluctuations) is from the Yoga Sutras of Patanjali, and D.
Yogah samadhih (Yoga is a state of absorption) is also from texts outside the Bhagavadgeeta.
Hence, statements B and D are not from the Bhagavadgeeta.